A61K 49/0419
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}
A61K49/0419 (Microparticles, microbeads, microcapsules, microspheres, i.e. having a size or diameter higher or) appears on 54 US grants and 74 published applications in this corpus.
Search patents in A61K- Granted patents
- 54
- Published applications
- 74
- Assignees
- 48
- Inventors
- 134
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
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| 1991 | 1 | 0 |
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| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 4 |
| 2005 | 0 | 3 |
| 2006 | 2 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 3 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 2 | 3 |
| 2015 | 2 | 2 |
| 2016 | 2 | 3 |
| 2017 | 4 | 4 |
| 2018 | 0 | 3 |
| 2019 | 1 | 4 |
| 2020 | 3 | 5 |
| 2021 | 8 | 2 |
| 2022 | 1 | 5 |
| 2023 | 1 | 2 |
| 2024 | 2 | 6 |
| 2025 | 4 | 5 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Implants and biodegradable tissue markers12 May 2026US 12,622,982 B2Incept, LLC
- Selective internal radiation therapy mapping via microbeads with different contrast materials2 Dec 2025US 12,484,865 B2Varian Medical Systems, Inc.
- Nanocarbon-iodine calcium alginate microspheres and preparation method and application thereof2 Dec 2025US 12,485,190 B2Nanjing Drum Tower Hospital
- Radiopaque contrast agent15 Jul 2025US 12,357,710 B2Sicreations, LLC
- Compositions for treatment of discogenic pain, and processes for making and using the same3 Jun 2025US 12,318,508 B233 Medical, Inc.
- A method for preparing microparticles for drug delivery27 Aug 2026US 2026/0248735 A1Danmarks Tekniske Universitet
- Low x-ray attenuation change hard shelled oral contrast material16 Apr 2026US 2026/0102522 A1The Regents of the University of California
- Nanocarbon-iodine calcium alginate microspheres and preparation method and application thereof27 Nov 2025US 2025/0360232 A1Nanjing Drum Tower Hospital
- Compositions for treatment of discogenic pain, and processes for making and using the same18 Sep 2025US 2025/0288727 A133 Medical, Inc.
- Selective internal radiation therapy mapping via microbeads with different contrast materials7 Aug 2025US 2025/0248671 A1Varian Medical Systems, Inc.
Most cited
By later US patents
- Embolizing compositions280US 5,695,480 AMicro Therapeutics, Inc. · 1997
- Low density microspheres and their use as contrast agents for computed tomography223US 5,281,408 A1994
- Low density microspheres and their use as contrast agents for computed tomography, and in other applications185US 5,547,656 AImaRx Pharmaceutical Corp. · 1996
- Tissue marking using biocompatible microparticles152US 6,394,965 B1Carbon Medical Technologies, Inc. · 2002
- Low density microspheres and their use as contrast agents for computed tomography147US 5,205,290 A1993