C07C 227/18
By reactions involving amino or carboxyl groups
Official title: by reactions involving amino or carboxyl groups, e.g. hydrolysis of esters or amides, by formation of halides, salts or esters
C07C227/18 (By reactions involving amino or carboxyl groups) appears on 515 US grants and 523 published applications in this corpus.
Search patents in C07C- Granted patents
- 515
- Published applications
- 523
- Assignees
- 417
- Inventors
- 1,686
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 14 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 16 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 4 |
| 2002 | 13 | 12 |
| 2003 | 13 | 15 |
| 2004 | 5 | 23 |
| 2005 | 12 | 7 |
| 2006 | 19 | 22 |
| 2007 | 11 | 10 |
| 2008 | 9 | 10 |
| 2009 | 10 | 15 |
| 2010 | 5 | 17 |
| 2011 | 12 | 16 |
| 2012 | 13 | 18 |
| 2013 | 17 | 30 |
| 2014 | 17 | 22 |
| 2015 | 29 | 36 |
| 2016 | 35 | 35 |
| 2017 | 25 | 28 |
| 2018 | 24 | 28 |
| 2019 | 25 | 16 |
| 2020 | 17 | 20 |
| 2021 | 12 | 19 |
| 2022 | 15 | 33 |
| 2023 | 13 | 22 |
| 2024 | 11 | 28 |
| 2025 | 17 | 19 |
| 2026 | 11 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Alpha-carbonyl alkenyl ester preparation method therefor and application thereof15 Sep 2026US 12,735,449 B2Jiangxi Normal University
- Zwitterionic crosslinkers, hydrogels comprising zwitterionic crosslinkers, and methods for making and using21 Jul 2026US 12,686,758 B2University of Idaho
- Process for the synthesis of anthranilic acid/amide compounds and intermediates thereof23 Jun 2026US 12,662,446 B2Pi Industries Ltd.
- Process for the synthesis of anthranilic acid/amide compounds and intermediates thereof23 Jun 2026US 12,662,468 B2Pi Industries Ltd.
- Process for preparing a polyisocyanate, polyisocyanate, its use and polyaddition products prepared therefrom12 May 2026US 12,623,998 B2Covestro Deutschland AG
- Solid state salification of organic molecules8 Oct 2026US 2026/0308111 A1The Florida State University Research Foundation, Inc.
- Process for purifying 2-phenyl-4-(3-carboalkoxypropionyl)-1,3-oxazolin-5-one and new crystalline form b of 2-phenyl-4-(3-carbomethoxypropionyl)-1,3-oxazolin-5-one24 Sep 2026US 2026/0285820 A1Heraeus Precious Metals GmbH & Co. KG
- Process for preparing potassium iron(iii) ethylenediaminetetraacetic acid complex salt10 Sep 2026US 2026/0265174 A1BASF SE
- Renewably derived polyamides and methods of making the same13 Aug 2026US 2026/0234328 A1Wilmar Trading Pte. Ltd.
- Method for producing tryptophan decomposition product, method for producing formylkynurenine, method for producing kynurenine, method for producing tryptophan radical-containing aqueous solution, and bactericidal aqueous solution6 Aug 2026US 2026/0223845 A1Meijo University
Most cited
By later US patents
- Lipid formulation340US 8,158,601 B2Alnylam Pharmaceuticals, Inc. · 2012
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Compounds and compositions for intracellular delivery of therapeutic agents143US 9,868,691 B2ModernaTX, Inc. · 2018
- Lipid formulation126US 8,802,644 B2Tekmira Pharmaceuticals Corporation · 2014
- Lipid formulations115US 9,394,234 B2Arbutus Biopharma Corporation · 2016