C07C 69/60
Maleic acid esters
Official title: Maleic acid esters; Fumaric acid esters
C07C69/60 (Maleic acid esters) appears on 104 US grants and 106 published applications in this corpus.
Search patents in C07C- Granted patents
- 104
- Published applications
- 106
- Assignees
- 64
- Inventors
- 281
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 3 |
| 2004 | 0 | 2 |
| 2005 | 0 | 4 |
| 2006 | 3 | 1 |
| 2007 | 3 | 14 |
| 2008 | 0 | 5 |
| 2009 | 0 | 4 |
| 2010 | 2 | 4 |
| 2011 | 6 | 2 |
| 2012 | 3 | 6 |
| 2013 | 4 | 7 |
| 2014 | 4 | 11 |
| 2015 | 6 | 4 |
| 2016 | 9 | 9 |
| 2017 | 10 | 12 |
| 2018 | 5 | 4 |
| 2019 | 1 | 0 |
| 2020 | 4 | 4 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 4 | 2 |
| 2025 | 1 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aqueous compositions comprising 6-undecanol-esters19 May 2026US 12,629,324 B2Evonik Operations GmbH
- Multifunctional linker compounds10 Mar 2026US 12,570,600 B220Bloc, Inc.
- Compositions and methods for enhancing production, growth, spread, or oncolytic and immunotherapeutic efficacy of interferon-sensitive viruses14 Oct 2025US 12,440,525 B2Ottawa Hospital Research Institute
- Lubricity modifier for fuels and application thereof12 Nov 2024US 12,139,679 B2China Petroleum & Chemical Corporation
- Compositions and methods for enhancing production, growth, spread, or oncolytic and immunotherapeutic efficacy of interferon-sensitive viruses3 Sep 2024US 12,076,353 B2Ottawa Hospital Research Institute
- Method for selecting additive for suppressing nitrosation reaction, and formulation for suppressing generation of nitroso compounds14 Aug 2025US 2025/0255965 A1Sawai Pharmaceutical Co., Ltd.
- Multifunctional linker compounds31 Jul 2025US 2025/0243148 A120Bloc, Inc.
- Maleic anhydride modified voltage stabilizer, and preparation method therefor and application thereof13 Mar 2025US 2025/0084261 A1Electric Pwr. Res. Inst. China Southern Power Grid
- Compositions and methods for enhancing production, growth, spread, or oncolytic and immunotherapeutic efficacy of interferon-sensitive viruses19 Sep 2024US 2024/0307469 A1Ottawa Hospital Research Institute
- Aqueous compositions comprising 6-undecanol-esters18 Apr 2024US 2024/0122831 A1Evonik Operations GmbH
Most cited
By later US patents
- Ester compounds, polymers, resist compositions and patterning process132US 6,312,867 B1Shin-Etsu Chemical Co., Ltd. · 2001
- Use of fumaric acid derivatives82US 6,436,992 B1Fumapharm AG · 2002
- Prodrugs of methyl hydrogen fumarate, pharmaceutical compositions thereof, and methods of use66US 8,778,991 B2XenoPort, Inc. · 2014
- Prodrugs of methyl hydrogen fumarate, pharmaceutical compositions thereof, and methods of use46US 8,148,414 B2XenoPort, Inc. · 2012
- Bio-derived 1,3-propanediol and its conjugate esters as natural and non irritating solvents for biomass-derived extracts, fragrance concentrates, and oils38US 7,759,393 B2DuPont Tate & Lyle Bio Products Company, LLC · 2010