Recent Patents on Nanotechnology最新文献

{"title":"Design Optimization and Evaluation of Patented Fast-Dissolving Oral Thin Film of Ambrisentan for the Treatment of Hypertension.","authors":"Abhishek Kanugo","doi":"10.2174/0118722105298163240823100003","DOIUrl":"https://doi.org/10.2174/0118722105298163240823100003","url":null,"abstract":"<p><strong>Background: </strong>Cardiovascular diseases, including hypertension, are the prominent source of death globally. High blood pressure is responsible for heart failure and also damages the vital organs of the body, which also creates mortality. The activation of the sympathetic nervous system in the primary sunrise period is a highly critical condition, and several persons have lost their tissue due to the unavailability of medicine at this time.</p><p><strong>Objective: </strong>The present research deals with the progress of fast-dissolving oral thin film (OTF) of Ambrisentan for the prevention and cure of hypertension.</p><p><strong>Methods: </strong>The OTF was established using the solvent casting method. The compatibility of Ambrisentan with film former HPMC E15 was checked with FTIR and DSC. The optimization was assessed using the design of the experiment using 32 Box-Behnken designs. The independent parameters were filmed former (X1: HPMC E15), plasticizer (X2: PEG 400), and super disintegrant (X3: cross povidone) and dependable parameters were disintegration time (Y1) and dissolution release (Y2).</p><p><strong>Results: </strong>The optimized batch F7 showed the least disintegration time (9 sec), folding endurance of (99), content uniformity (98.57 %), pH (6.4), and dissolved within 5 min. The scanning electron microscopy confirmed the evenness and smoothness of the film with a particle size of 10 μm. Patent related with OTF (Indian- 202321050359), US (11701339).</p><p><strong>Conclusion: </strong>The investigation indicated that fast dissolving oral thin film of Ambrisentan improves the solubility and therapeutic efficacy in the prevention and treatment of cardiovascular complications. The prompt release of Ambrisentan minimizes the mortality associated with heart attack and hypertension.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142677563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From Solid to Fluid: Novel Approaches in Neuromorphic Engineering.","authors":"Daniil Nikitin, Hynek Biederman, Andrei Choukourov","doi":"10.2174/0118722105305259240919074119","DOIUrl":"https://doi.org/10.2174/0118722105305259240919074119","url":null,"abstract":"<p><p>Neuromorphic engineering is rapidly developing as an approach to mimicking processes in brains using artificial memristors, devices that change conductivity in response to the electrical field (resistive switching effect). Memristor-based neuromorphic systems can overcome the existing problems of slow and energy-inefficient computing that conventional processors face. In the Introduction, the basic principles of memristor operation and its applications are given. The history of switching in sandwich structures and granular metals is reviewed in the Historical Overview. Particular attention is paid to the fundamental articles from the pre-memristor era (the 1960s-70s), which demonstrated the first evidence of resistive switching and predicted the filamentary mechanism of switching. Multi-dimensionality in neuromorphic systems: Despite the powerful computational abilities of traditional memristor arrays, they cannot repeat many organizational characteristics of biological neural networks, i.e., their multi-dimensionality. This part reviews the unconventional nanowire- and nanoparticle-based neuromorphic systems that demonstrate incredible potential for use in reservoir computing due to the unique spiking change in conductance similar to firing in neurons. Liquid-based neuromorphic devices: The transition of neuromorphic systems from solid to liquid state broadens the possibilities for mimicking biological processes. In this section, ionic current memristors are reviewed and, the working principles of which bring us closer to the mechanisms of information transmittance in real synapses. Nanofluids: A novel direction in neuromorphic engineering linked to the application of nanofluids for the formation of reconfigurable nanoparticle networks with memristive properties is given in this section. The Conclusion t summarizes the bullet points of the Review and provides an outlook on the future of liquid-state neuromorphic systems.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142478910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formulation Optimization and Evaluation of Patented Solid Lipid Nanoparticles of Ambrisentan for Pulmonary Arterial Hypertension.","authors":"Harshada Shewale, Abhishek Kanugo","doi":"10.2174/0118722105302631240816115638","DOIUrl":"https://doi.org/10.2174/0118722105302631240816115638","url":null,"abstract":"<p><strong>Background: </strong>Ambrisentan is a new endothelin receptor antagonist extensively used to manage pulmonary or pulmonary arterial hypertension.</p><p><strong>Objective: </strong>The therapeutic efficacy of Ambrisentan is limited due to its reduced solubility, higher log P (3.4), and thus less bioavailability. The recent investigation was concentrated on the improvement of solubility, and bioavailability of Ambrisentan for the therapy of hypertension via solid lipid nanoparticles (SLN) administered orally.</p><p><strong>Methods: </strong>XRD evaluated the compatibility of Ambrisentan with lipids with FTIR, DSC, and crystalline nature. The SLN was developed by High-pressure homogenization method. The Glyceryl monostearate and Tween 80 indicated the highest solubility, hence selected. The optimization was performed with Box-Behnken Design considering the concentration of GMS (X1), Tween 80 (X2), stirring speed (X3) as independent factors and particle size (Y1), entrapment efficiency (Y2) as dependent factors. The Patents on the SLN are Indian 202321053691, U.S. Patent, 10,973,798B2, U.S. Patent 10,251,960B2, U.S. Patent 2021/0069121A1 and U.S. Patent 2022/0151945A1.</p><p><strong>Results: </strong>The optimized batch F1 showed particle size (130 nm), ZP (-18.9 mV), and entrapment efficiency (85.73 %). The dual release pattern (prompt and sustained) was achieved with the SLNloaded Ambrisentan for about 24 hours. The lyophilized sample was subjected to SEM, which also revealed a spherical shape of a colloidal dispersion with a particle size of 126 nm. Hence, the F1 batch is highly recommended for solid oral delivery and also for the pilot-plant scale-up.</p><p><strong>Conclusion: </strong>A marked improvement in the solubility and dissolution of Ambrisentan was attained with the SLN. Moreover, the sustained delivery via the oral route enabled the patient's comfort, compliance, and therapeutic efficacy.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142362409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid Nanophotonic Graphene Systems: A Transformative Innovation for Transdermal Drug Delivery.","authors":"Dilpreet Singh, Mandavi Pandey","doi":"10.2174/0118722105329862240919075834","DOIUrl":"10.2174/0118722105329862240919075834","url":null,"abstract":"<p><p>Transdermal Drug Delivery Systems (TDDSs) offer non-invasive administration and sustained drug release, enhancing patient compliance. However, the skin's natural barrier, particularly the stratum corneum, limits the effectiveness of TDDS for high molecular weight and hydrophilic substances. Innovations in material science, particularly hybrid nanophotonic graphene systems, present promising solutions. Nanophotonics generate localized photothermal effects to create microchannels in the skin, while graphene enhances permeability through its electrical and thermal conductivity. Hybrid nanophotonic systems, such as photonic crystals, plasmonic nanoparticles, metamaterials, quantum dots, nanowires, fiber optic nanosensors, and nanoantennas, offer precise control and real-time monitoring for applications in cancer therapy, chronic pain management, targeted drug delivery, and personalized medicine. This perspective examines the design, effectiveness, biocompatibility, and clinical implications of these hybrid systems, highlighting their potential to expand transdermal drug delivery and revolutionize treatment in personalized medicine. This particular formulation holds patentability, as supported by product patents that highlight the advancements in hybrid nanophotonic graphene systems for transdermal drug delivery.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142308902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-Rutin: A Promising Solution for Alleviating Various Disorders.","authors":"Gunjan Nautiyal, Neha Minocha, Shiv Kant Sharma, Kiran Yadav, Dhirender Kaushik, Parijat Pandey","doi":"10.2174/0118722105310674240822115457","DOIUrl":"https://doi.org/10.2174/0118722105310674240822115457","url":null,"abstract":"<p><strong>Background: </strong>Rutin, often known as vitamin P, is a natural flavonoid compound, which offers a broad spectrum of therapeutic potentials. Rutin is metabolised to different compounds by the gut bacteria after consumption, therefore, very little is absorbed. Higher plants contribute to rutin synthesis in large quantities, and it may also be found in many fruits and fruity rinds, particularly citrus fruits and berries.</p><p><strong>Objective: </strong>The present paper highlights several studies conducted on rutin along with its nanoformulations regarding its broad spectrum of therapeutic potentials.</p><p><strong>Method: </strong>Numerous electronic databases, including Springer, PubMed, Science Direct, Pubchem, etc. were searched to extract relevant published literature demonstrating rutin effectiveness in various ailments.</p><p><strong>Results: </strong>The reviewed literature showed that rutin and related flavonoids possess a variety of physiological properties that protects human beings, plants and animals. Antioxidant, anti-inflammatory, anti-allergic, cytoprotective, vasoprotective, anticarcinogenic, neuroprotective, cardioprotective, antibacterial, antiviral, antiprotozoal, antitumor, anti-hypertensive antiplatelet, antispasmodic and hypolipidemic, activities. Nanotechnology has been implemented for the improvement of the bioavailability of rutin using novel drug-delivery carriers.</p><p><strong>Conclusion: </strong>The study concludes that the development of rutin nanoformulations for multiple therapeutic approaches contributes towards enhanced aqueous solubility as well as tailored pharmacokinetics compared to conventional delivery of rutin. However, more investigations should be conducted to confirm the improved bioavailability of the rutin nanoformulations.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142120973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing Tribological Characteristics of Titanium Grade-5 Alloy through HVOF Thermal-Sprayed WC-Co Nano Coatings by TOPSIS and Golden Jack Optimization Algorithm.","authors":"S Thirumalvalavan, G Perumal, N Senthilkumar, S Selvarasu","doi":"10.2174/0118722105306841240808092616","DOIUrl":"https://doi.org/10.2174/0118722105306841240808092616","url":null,"abstract":"<p><strong>Background: </strong>Thermal spray coatings have emerged as a pivotal technology in materials engineering, primarily for augmenting the characteristics related to wear and tribology of metallic substrates.</p><p><strong>Method: </strong>This study aimes to delve into applying High-Velocity Oxygen Fuel (HVOF) thermalsprayed WC-Co nanocoatings on Titanium Grade-5 alloy (Ti64). The coating process, utilizing nano-sized WC-Co powder, undergoes systematic optimization of HVOF parameters, encompassing the flow rate of carrier gas, powder feed rate, and nozzle distance. Experimental assessments via Pin-on-Disc (PoD) tests encompass Loss of Wear (WL), Friction Coefficient (CoF), and Frictional Force (FF). Later, an exhaustive optimization of responses is conductede using the Technique for Order Preference by Similarity to the Ideal Solution (TOPSIS) method and the golden jack optimization algorithm (GJOA).</p><p><strong>Results: </strong>Outcomes show a substantial increase in WL, CoF, and FF with a rise in the carrier gas and powder feed rate. However, with increasing spraying distance of powder, the WL, CoF, and FF tend to lower due to higher bonding, which leads to increased wear resistance. The ideal parametric settings achieved from TOPSIS and GJOA are 245 mm of spray distance, 30 gpm rate of powder feed, and 11 lpm of carrier gas flow rate. The powder feed rate contributes 88.99% to the control action, as seen from ANOVA.</p><p><strong>Conclusion: </strong>The confirmation experiment presents that the WL, CoF, and FF output responses are 42.33, 27.97, and 9.38% less than the mean of experimental data. These results highlight the HVOF process in spraying WC-Co nanocoatings to fortify the durability and performance of Ti64 alloy that can be patented for diverse engineering applications.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142019291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Copper Electrodes Modified with Gold Nanoparticles Detect Two Hazardous Contaminants (As, Cd) in Raw Milk","authors":"Upama Das, Nikhil Kumar Daimari, Khairul Islam, Rajib Biswas","doi":"10.2174/0118722105316267240807072122","DOIUrl":"https://doi.org/10.2174/0118722105316267240807072122","url":null,"abstract":"Background: Milk contamination has been a longstanding global concern, with Heavy Metals (HM) like lead (Pb), mercury (Hg), arsenic (As), and cadmium (Cd) posing significant risks. These contaminants often infiltrate milk through contaminated water sources or during pasteurization. This study introduces a novel approach to detecting milk contaminants by analyzing the current– voltage (IV) characteristics of copper (Cu) electrodes modified with gold nanoparticle (AuNPs). Methods: Leveraging the exceptional conductivity of metal nanoparticles, electrons freely traverse the surface, facilitating electron movement across the copper substrate. Additionally, the nanoparticles serve as binding agents, aiding in the comparative detection of contaminants. This method enables the preliminary detection of two HM (As, Cd) by evaluating their current gains in milk supernatant samples at varying concentrations. Results: AuNPs deposited on Cu electrodes exhibited a linear IV trend, with a significant increase in current compared to bare electrodes. Spiked milk supernatant drops cast on the electrode system displayed a current gain, which was evaluated towards sensing application of HM ions in milk. The synthesized AuNPs underwent initial characterization using a UV-Vis spectrophotometer, revealing a prominent plasmonic peak around 520 nm, confirming nanoparticle formation. X-Ray Diffraction (XRD) analysis confirmed the Face-Centred Cubic (FCC) crystal structure. Conclusion: Notably, different concentrations (1 and 10 ppm) and types of HM (As, Cd, Hg, and Pb) in milk supernatant yielded varying current gains, providing insights specifically targeting As and Cd contamination. conclusion: Notably, different concentrations and types of heavy metals in milk supernatant yielded varying current gains, providing insights into specific heavy metal contamination.","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":"34 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142191414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formulation Optimization and Characterization of Solid Lipid Nanoparticles of Apixaban.","authors":"Laukik Mulay, Namita Hegde, Abhishek Kanugo","doi":"10.2174/0118722105284862240506045944","DOIUrl":"https://doi.org/10.2174/0118722105284862240506045944","url":null,"abstract":"<p><strong>Background: </strong>Unpredictable situations such as clotting of blood, deep vein thrombosis, and pulmonary embolism arise in the body, which is the leading cause of mortality. Such conditions generally arise after surgery as well as after treatment with oral anticoagulant agents. Apixaban is a novel oral anticoagulant widely recommended for the prevention and treatment of strokes and blood clots suffering from nonvalvular atrial fibrillation by suppressing factor Xa. Apixaban has a log P of 2.71 with poor solubility and reported maximum bioavailability of approximately 50%.</p><p><strong>Objective: </strong>Hence, the current research mainly focused on the improvement of solubility, bioavailability, and therapeutic efficacy of Apixaban via solid lipid nanoparticles (SLN).</p><p><strong>Methods: </strong>The SLN was developed using the hot-homogenization method using a high-pressure homogenizer. The drug-lipid compatibility study was assessed by the FTIR, and the thermal analysis was performed using differential scanning calorimetry (DSC). During the scrutiny of lipids, the highest solubility of Apixaban was estimated in the glyceryl monostearate, hence selected for the formulation. Moreover, the colloidal solution was stabilized by the polyethylene glycol 200. The Design of Expert software (Version 13, Stat-Ease) was implemented for the optimization analysis by considering the 3-independent factors and 2-dependent parameters. The Patents on the SLN are Indian 202321053691, U.S. Patent, 10,973,798B2, U.S. Patent, U.S. Patent 2021/0069121A1, U.S. Patent 2022/0151945A1.</p><p><strong>Results: </strong>Box-Behnken design was applied along with ANOVA, which showed a p-value less than 0.05 for the dependent parameters such as particle size and entrapment efficiency (p-value: 0.0476 and 0.0379). The optimized batch F10 showed a particle size of 167.1 nm, -19.5 mV zeta potential, and an entrapment efficiency of 87.32%. The optimized batch F10 was lyophilized and analyzed by Scanning electron microscopy (SEM), which showed a particle size of 130 nm. The solid powder was filled into the capsule for oral delivery.</p><p><strong>Conclusion: </strong>The marked improvement in solubility and bioavailability was achieved with F10- loaded Apixaban via Solid lipid nanoparticles. Moreover, the sustained released profile also minimizes the unseen complications that occur due to the clotting of blood.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141890621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cutting-Edge Developments and Patent Trends in Microspheres Drug Delivery: A Comprehensive Overview.","authors":"Shailesh Sharma, Pankaj, Subhash Kumar, Neelam Sharma, Surajpal Verma","doi":"10.2174/0118722105296316240626071243","DOIUrl":"https://doi.org/10.2174/0118722105296316240626071243","url":null,"abstract":"<p><p>Microspheres have emerged as innovative drug delivery platforms with significant potential to improve the therapeutic efficacy of drugs with limited aqueous solubility and prolong their release. This abstract provides an overview of recent developments in microsphere research, highlighting key trends and innovative approaches. Recent studies have focused on various aspects of microspheres, including formulation techniques, materials selection, and their applications in drug delivery. Recent breakthroughs in polymer science have paved the way for the creation of innovative biodegradable and biocompatible materials for microsphere fabrication, improving drug encapsulation effectiveness and release dynamics. Notably, the integration of nanomaterials and functionalized polymers has enabled precise control over drug release rates and enhanced targeting capabilities. The utilization of microspheres for administering a diverse array of therapeutic substances, including anticancer drugs, anti-inflammatory agents, and peptides, has gained significant attention. These microspheres have demonstrated the potential to enhance drug stability, minimize dosing frequency and enhance patient adherence.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141735486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Patent Analysis on Nano Drug Delivery Systems.","authors":"Dengyu Li, Wen Luo, Shengwei Yin, Ying Wang, Yanqing Zhao, Shiwei Zhu, Junfeng Yu, Ping Yang, Lina Zhang, Zhuyan Xi","doi":"10.2174/0118722105293359240626070342","DOIUrl":"https://doi.org/10.2174/0118722105293359240626070342","url":null,"abstract":"<p><strong>Background: </strong>A nano drug delivery system is an effective tool for drug delivery and controlled release, which is used for a variety of medical applications. In recent decades, nano drug delivery systems have been significantly developed with the emergence of new nanomaterials and nanotechnologies.</p><p><strong>Objective: </strong>This article aimed to provide insight into the technological development of nano drug delivery systems through patent analysis.</p><p><strong>Methods: </strong>3708 patent documents were used for patent analysis after retrieval from the Incopat patent database.</p><p><strong>Results: </strong>The number of patents on nano drug delivery systems has shown a rapid growth trend in the past two decades. At present, China and the United States have obvious contributions to the number of patents. According to the patent data, the nanomaterials used in nano drug delivery system are mainly inorganic nanomaterials, lipid-based nanomaterials, and macromolecules. In recent years, the highly cited patents (≥14) for nano drug delivery systems mainly involve lipid-based nanomaterials, indicating that their technology is mature and widely used. The inorganic nanomaterials in drug delivery have received increasing attention, and the number of related patents has increased significantly after 2016. The number of highly cited patents in the United States is 250, which is much higher than in other countries.</p><p><strong>Conclusion: </strong>Even after decades of development, nano drug delivery systems remain a hot topic for researchers. The significant increase in patents since 2016 can be attributed to the large number of new patents from China. However, according to the proportion of highly cited patents in total, China's patented technologies in nano drug delivery systems are not advanced enough compared to developed countries, including the United States, Canada, Germany, and France. In the future, research on emerging nanomaterials for nano drug delivery systems, such as inorganic nanomaterials, may focus on developing new materials and optimising their properties. The lipid-based and polymer- based nanomaterials can be continuously improved for the development of new nanomedicines.</p>","PeriodicalId":49324,"journal":{"name":"Recent Patents on Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141564973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}