A61K 49/225
Microparticles, microcapsules
Official title: {Microparticles, microcapsules (gas-filled to be classified in A61K49/223)}
A61K49/225 (Microparticles, microcapsules) appears on 114 US grants and 174 published applications in this corpus.
Search patents in A61K- Granted patents
- 114
- Published applications
- 174
- Assignees
- 106
- Inventors
- 459
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 11 | 0 |
| 1997 | 10 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 3 |
| 2002 | 4 | 3 |
| 2003 | 3 | 6 |
| 2004 | 2 | 5 |
| 2005 | 0 | 8 |
| 2006 | 1 | 5 |
| 2007 | 0 | 7 |
| 2008 | 2 | 3 |
| 2009 | 1 | 8 |
| 2010 | 1 | 5 |
| 2011 | 1 | 7 |
| 2012 | 0 | 9 |
| 2013 | 1 | 7 |
| 2014 | 2 | 10 |
| 2015 | 7 | 13 |
| 2016 | 2 | 7 |
| 2017 | 5 | 4 |
| 2018 | 2 | 8 |
| 2019 | 4 | 8 |
| 2020 | 3 | 9 |
| 2021 | 3 | 10 |
| 2022 | 5 | 4 |
| 2023 | 4 | 8 |
| 2024 | 4 | 6 |
| 2025 | 1 | 2 |
| 2026 | 2 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cancer treatment methods using thermotherapy and/or enhanced immunotherapy15 Sep 2026US 12,734,238 B2
- Nanocomposite particle and uses thereof3 Feb 2026US 12,539,278 B2Academia Sinica
- Pharmaceutical composition with nanoparticle-based drug delivery combined with non-invasive radiographic monitoring model29 Apr 2025US 12,285,498 B2Nanomedtrix, LLC
- Pharmaceutical composition with nanoparticle-based drug delivery combined with non-invasive radiographic monitoring model1 Oct 2024US 12,102,693 B1Nanomedtrix, LLC
- Porous nanocarriers for the monitoring and treatment of bladder cancer30 Apr 2024US 11,969,483 B2Nanomedtrix, LLC
- Methods and compositions for functionalizing the surface of elastomeric particles20 Aug 2026US 2026/0243758 A1The Regents of the University of Colorado, a body corporate
- Method For Producing Ultrasound-Sensitive Drug Carrier For Delivering Hydrophobic Drug, And Ultrasound-Sensitive Drug Carrier Using Same30 Jul 2026US 2026/0216380 A1BioInfra Life Science Inc.
- Cavitation-inducing biodegradable polymeric particles23 Jul 2026US 2026/0207793 A1Oxsonics Limited
- Imaging-guided bioresorbable acoustic hydrogel microrobots11 Jun 2026US 2026/0157972 A1California Institute of Technology
- Photoacoustic vaporization of exoskeletal and endoskeletal droplets4 Jun 2026US 2026/0151514 A1The Regents of the University of Colorado, a body corporate
Most cited
By later US patents
- Optoacoustic imaging for medical diagnosis364US 5,840,023 A1998
- Porous inorganic ultrasound contrast agents245US 5,147,631 AThe Du Pont Merck Pharmaceutical Company · 1992
- Ionically cross-linked polymeric microcapsules232US 5,149,543 AMassachusetts Institute of Technology · 1992
- Spray-dried microparticles and their use as therapeutic vehicles196US 5,993,805 AQuadrant Healthcare (UK) Limited · 1999
- Gas mixtures useful as ultrasound contrast media, contrast agents containing the media and method195US 5,556,610 ABracco Research S.A. · 1996