A61K 9/204
Polyesters
Official title: {Polyesters, e.g. poly(lactide-co-glycolide)}
A61K9/204 (Polyesters) appears on 353 US grants and 292 published applications in this corpus.
Search patents in A61K- Granted patents
- 353
- Published applications
- 292
- Assignees
- 171
- Inventors
- 590
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 4 | 0 |
| 1993 | 14 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 18 | 0 |
| 1998 | 9 | 0 |
| 1999 | 13 | 0 |
| 2000 | 9 | 0 |
| 2001 | 15 | 4 |
| 2002 | 10 | 10 |
| 2003 | 6 | 10 |
| 2004 | 3 | 22 |
| 2005 | 5 | 23 |
| 2006 | 9 | 15 |
| 2007 | 5 | 8 |
| 2008 | 3 | 21 |
| 2009 | 0 | 12 |
| 2010 | 7 | 15 |
| 2011 | 8 | 7 |
| 2012 | 9 | 6 |
| 2013 | 10 | 6 |
| 2014 | 19 | 16 |
| 2015 | 7 | 11 |
| 2016 | 10 | 12 |
| 2017 | 11 | 11 |
| 2018 | 8 | 9 |
| 2019 | 10 | 19 |
| 2020 | 8 | 16 |
| 2021 | 5 | 13 |
| 2022 | 8 | 7 |
| 2023 | 11 | 7 |
| 2024 | 2 | 5 |
| 2025 | 2 | 5 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pharmaceutical composition for treating levodopa-induced dyskinesia or for suppressing progression thereof12 May 2026US 12,622,947 B2Peptron, Inc.
- Polymeric implants with high drug loading and long-acting drug release and methods of making the same17 Mar 2026US 12,576,035 B2The University of North Carolina at Chapel Hill
- Bioerodible drug delivery devices6 Jan 2026US 12,514,823 B2EyePoint Pharmaceuticals, Inc.
- Tamper-resistant drug dosage forms and methods of making and use thereof4 Nov 2025US 12,458,601 B2Temple University of the Commonwealth System of Higher Education
- Bioerodible drug delivery devices17 Jun 2025US 12,329,859 B2EyePoint Pharmaceuticals, Inc.
- Compound slow-release implant of naltrexone and risperidone, preparation method therefor, and use thereof16 Apr 2026US 2026/0102388 A1Shenzhen ScienCare Pharmaceutical Co., Ltd.
- Tamper-resistant drug dosage forms and methods of making and use thereof19 Feb 2026US 2026/0048016 A1Temple University of the Commonwealth System of Higher Education
- Methods of treatment of ocular conditions with a sustained drug delivery implant16 Oct 2025US 2025/0319031 A1Allergan, Inc.
- Biodegradable compacted formulations and methods of use and manufacture thereof16 Oct 2025US 2025/0319080 A1
- Pharmaceutical composition for preventing relapse into cannabis use and application thereof10 Jul 2025US 2025/0221983 A1Shenzhen ScienCare Pharmaceutical Co., Ltd.
Most cited
By later US patents
- Continuous release formulations426US 4,526,938 AImperial Chemical Industries PLC · 1985
- Hydrogels of absorbable polyoxaesters413US 5,698,213 AEthicon, Inc. · 1997
- Drug delivery devices manufactured from poly(orthoesters) and poly(orthocarbonates)397US 4,093,709 AAlza Corporation · 1978
- Controlled local delivery of chemotherapeutic agents for treating solid tumors349US 5,626,862 AMassachusetts Institute of Technology · 1997
- Formulation for controlled release of drugs by combining hydrophilic and hydrophobic agents337US 5,869,079 AOculex Pharmaceuticals, Inc. · 1999