A61K 49/048
Microparticles, microbeads, microcapsules, microspheres, i.e. having a size or diameter higher or
Official title: {Microparticles, microbeads, microcapsules, microspheres, i.e. having a size or diameter higher or equal to 1 micrometer}
A61K49/048 (Microparticles, microbeads, microcapsules, microspheres, i.e. having a size or diameter higher or) appears on 36 US grants and 57 published applications in this corpus.
Search patents in A61K- Granted patents
- 36
- Published applications
- 57
- Assignees
- 29
- Inventors
- 99
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 3 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 3 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 2 | 5 |
| 2016 | 1 | 4 |
| 2017 | 1 | 1 |
| 2018 | 2 | 1 |
| 2019 | 4 | 5 |
| 2020 | 2 | 3 |
| 2021 | 3 | 4 |
| 2022 | 1 | 3 |
| 2023 | 2 | 2 |
| 2024 | 3 | 2 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Non-degradable embolisation microsphere17 Feb 2026US 12,552,891 B2Guerbet
- Imaging composition comprising porous silicon micro-particles23 Sep 2025US 12,419,974 B2University-Industry Cooperation Group of Kyung Hee University
- Radiopaque polymers30 Jul 2024US 12,049,525 B2Boston Scientific Medical Device Limited
- Radiopaque polymers16 Apr 2024US 11,957,755 B2Boston Scientific Medical Device Limited
- Thixotropic oxidized cellulose solutions and medical applications thereof16 Jan 2024US 11,872,244 B2Covidien LP
- Radiopaque monomer and embolisation microspheres comprising same25 Dec 2025US 2025/0387530 A1Centre National de la Recherche Scientifique (CNRS)
- Radiopaque glass radioembolization microparticles and related methods23 Oct 2025US 2025/0325726 A1Varian Medical Systems, Inc.
- Active metal microspheres and composite embolic agent based on same2 Jan 2025US 2025/0001053 A1Chongqing Baimaitengshi Pharmaceutical Technology Co., Ltd
- Microspheres with flow through voids as embolic and drug delivery agents15 Aug 2024US 2024/0269340 A1
- Composite embolization beads11 Jan 2024US 2024/0009332 A1Raika Medical Imaging Inc.
Most cited
By later US patents
- Injectable microspheres for dermal augmentation and tissue bulking98US 6,660,301 B1Biosphere Medical, Inc. · 2003
- Implantable particles for urinary incontinence94US 6,335,028 B12002
- Efficient microcapsule preparation and method of use82US 5,238,714 ABoard of Regents, The University of Texas System · 1993
- Therapeutic and diagnostic use of modified polymeric microcapsules57US 5,484,584 ABoard of Regents, The University of Texas System · 1996
- Compositions and methods using microspheres and non-ionic contrast agents30US 8,226,926 B2Biosphere Medical, Inc. · 2012