C07C 51/15
Preparation of carboxylic acids or their salts, halides or anhydrides: by reaction
Official title: by reaction of organic compounds with carbon dioxide, e.g. Kolbe-Schmitt synthesis
C07C51/15 (Preparation of carboxylic acids or their salts, halides or anhydrides: by reaction) appears on 265 US grants and 185 published applications in this corpus.
Search patents in C07C- Granted patents
- 265
- Published applications
- 185
- Assignees
- 171
- Inventors
- 641
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 4 | 0 |
| 2002 | 14 | 3 |
| 2003 | 3 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 7 |
| 2006 | 1 | 7 |
| 2007 | 5 | 3 |
| 2008 | 5 | 5 |
| 2009 | 3 | 4 |
| 2010 | 1 | 5 |
| 2011 | 2 | 2 |
| 2012 | 3 | 7 |
| 2013 | 2 | 14 |
| 2014 | 14 | 13 |
| 2015 | 5 | 5 |
| 2016 | 5 | 10 |
| 2017 | 9 | 7 |
| 2018 | 11 | 12 |
| 2019 | 2 | 9 |
| 2020 | 11 | 8 |
| 2021 | 8 | 12 |
| 2022 | 5 | 3 |
| 2023 | 3 | 16 |
| 2024 | 6 | 14 |
| 2025 | 5 | 11 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for preparing acetic acid by catalyst22 Sep 2026US 12,741,922 B2Taiyuan University of Technology
- Process for producing functionalized organic molecules and uses thereof28 Jul 2026US 12,692,215 B2Universitat Politecnica De Catalunya
- Plasma conversion reactor of C02 with C1 to C4 hydrocarbon to C1 to C5 oxygenate and method thereof12 May 2026US 12,623,199 B2The University of Liverpool
- Formate production method, formic acid production method, and antifreezing agent production method21 Apr 2026US 12,606,513 B2Nitto Denko Corporation
- Process for photocatalytic hydrocarboxylation of methanol with CO2 to produce acetic acid23 Dec 2025US 12,503,420 B2Council of Scientific and Industrial Research
- Conversion of a biomass-derived hydrocarbon feedstock into acrylate salts24 Sep 2026US 2026/0285796 A1Ifp Energies Nouvelles
- Method of manufacturing acetic acid3 Sep 2026US 2026/0257982 A1Hiroshima University
- Process for synthesis of dihydroxy-dicarboxylic acid biphenyl compounds6 Aug 2026US 2026/0225986 A1Mosaic Materials, Inc.
- Organonickel intermediates useful for carboxylation of substrates with carbon dioxide26 Feb 2026US 2026/0055128 A1Alliance for Sustainable Energy, LLC
- Biogas feed for production of acetic acid27 Nov 2025US 2025/0361199 A1Topsoe A/S
Most cited
By later US patents
- Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes66US 5,004,565 ABoard of Governors of Wayne State University · 1991
- Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes57US 4,959,182 ABoard of Governors of Wayne State University · 1990
- Chemiluminescent 1,2-dioxetane compounds54US 4,857,652 ABoard of Governors of Wayne State University · 1989
- Efficient and selective conversion of carbon dioxide to methanol, dimethyl ether and derived products47US 7,605,293 B2University of Southern California · 2009
- Chemiluminescent 1,2-dioxetane compounds44US 4,962,192 ABoard of Governors of Wayne State University · 1990