C12P 7/46
Dicarboxylic acids having four or less carbon atoms
Official title: Dicarboxylic acids having four or less carbon atoms, e.g. fumaric acid, maleic acid
C12P7/46 (Dicarboxylic acids having four or less carbon atoms) appears on 476 US grants and 664 published applications in this corpus.
Search patents in C12P- Granted patents
- 476
- Published applications
- 664
- Assignees
- 261
- Inventors
- 1,365
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 0 |
| 2002 | 5 | 1 |
| 2003 | 2 | 5 |
| 2004 | 1 | 3 |
| 2005 | 0 | 9 |
| 2006 | 4 | 13 |
| 2007 | 9 | 14 |
| 2008 | 5 | 10 |
| 2009 | 7 | 19 |
| 2010 | 9 | 26 |
| 2011 | 12 | 40 |
| 2012 | 12 | 46 |
| 2013 | 22 | 54 |
| 2014 | 44 | 56 |
| 2015 | 30 | 68 |
| 2016 | 40 | 50 |
| 2017 | 35 | 39 |
| 2018 | 42 | 35 |
| 2019 | 26 | 39 |
| 2020 | 36 | 37 |
| 2021 | 23 | 16 |
| 2022 | 20 | 18 |
| 2023 | 19 | 20 |
| 2024 | 11 | 23 |
| 2025 | 11 | 15 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Recombinant endoxylanases and related compositions and methods of use25 Aug 2026US 12,716,082 B2Arizona Board of Regents on behalf of Arizona State University
- Methods and systems for producing organic compounds in a subterranean environment25 Aug 2026US 12,716,334 B2Cemvita Factory, Inc.
- Method of producing carboxylic acid18 Aug 2026US 12,709,763 B2Toray Industries, Inc.
- Use of microbial cell lines to maximize organic acid production7 Jul 2026US 12,674,189 B2J&K Ingredients, LLC
- Recombinant host cells for the production of malonate26 May 2026US 12,637,680 B2Lygos, Inc.
- Genetically engineered microorganism and method for producing succinate and method for making genetically engineered microorganism27 Aug 2026US 2026/0250723 A1National Yang Ming.Chiao Tung University
- Methods for carbon-conserving cell-free bioproduction27 Aug 2026US 2026/0250724 A1Battelle Memorial Institute
- Method for improving rate of xylose and arabinose utilization in saccharomyces cerevisiae6 Aug 2026US 2026/0226512 A1Cas Center for Excellence In Molecular Plant Sciences, Chinese Academy of Sciences
- Method for treating grains to produce material useful for chemicals and biofuels30 Jul 2026US 2026/0218247 A1Shell USA, Inc.
- Bio-based succinic acid composition, preparation method therefor, and use thereof28 May 2026US 2026/0146267 A1(Kingfa Sci. & Tech.Co., Ltd.)
Most cited
By later US patents
- Method for the production of dicarboxylic acids135US 5,869,301 ALockhead Martin Energy Research Corporation · 1999
- Mutant E. coli strain with increased succinic acid production118US 7,223,567 B2Rice University · 2007
- Process for manufacturing ethanol and for recovering glycerol, succinic acid, lactic acid, betaine, potassium sulfate, and free flowing distiller's dry grain and solubles or a solid fertilizer therefrom117US 5,177,008 A1993
- Mutant E. coli strain with increased succinic acid production113US 5,770,435 AThe University of Chicago · 1998
- Process for the production and purification of succinic acid111US 5,143,834 A1992