C08K 5/1539
Cyclic anhydrides
C08K5/1539 (Cyclic anhydrides) appears on 165 US grants and 183 published applications in this corpus.
Search patents in C08K- Granted patents
- 165
- Published applications
- 183
- Assignees
- 157
- Inventors
- 568
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 4 | 1 |
| 2003 | 2 | 3 |
| 2004 | 2 | 0 |
| 2005 | 1 | 6 |
| 2006 | 2 | 3 |
| 2007 | 1 | 3 |
| 2008 | 3 | 3 |
| 2009 | 0 | 6 |
| 2010 | 1 | 6 |
| 2011 | 1 | 5 |
| 2012 | 1 | 6 |
| 2013 | 5 | 12 |
| 2014 | 9 | 12 |
| 2015 | 5 | 11 |
| 2016 | 7 | 16 |
| 2017 | 10 | 9 |
| 2018 | 10 | 4 |
| 2019 | 5 | 14 |
| 2020 | 9 | 15 |
| 2021 | 12 | 11 |
| 2022 | 3 | 4 |
| 2023 | 7 | 5 |
| 2024 | 7 | 14 |
| 2025 | 2 | 6 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- High temperature three dimensional printing compositions65US 9,708,440 B2Novoset, LLC · 2017
- Process for producing polyester resin foam and polyester resin foam sheet60US 5,000,991 ASekisui Kaseihin Kogyo Kabushiki Kaisha · 1991
- High temperature three-dimensional printing compositions41US 9,873,761 B1Novoset, LLC · 2018
- Multi-component coating composition comprising an anhydride containing polymer, a glycidyl component and a monomeric or oligomeric anhydride component35US 5,017,435 AE. I. Du Pont de Nemours and Company · 1991
- Thermoplastic composition, process for its preparation, and use29US 5,494,962 ASolvay (Societe Anonyme) · 1996