C07C 67/30
Preparation of carboxylic acid esters: by modifying the acid moiety of the
Official title: by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
C07C67/30 (Preparation of carboxylic acid esters: by modifying the acid moiety of the) appears on 2,475 US grants and 2,250 published applications in this corpus.
Search patents in C07C- Granted patents
- 2,475
- Published applications
- 2,250
- Assignees
- 1,207
- Inventors
- 6,412
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 18 | 0 |
| 1978 | 5 | 0 |
| 1979 | 15 | 0 |
| 1980 | 9 | 0 |
| 1981 | 13 | 0 |
| 1982 | 16 | 0 |
| 1983 | 5 | 0 |
| 1984 | 14 | 0 |
| 1985 | 21 | 0 |
| 1986 | 18 | 0 |
| 1987 | 14 | 0 |
| 1988 | 15 | 0 |
| 1989 | 16 | 0 |
| 1990 | 22 | 0 |
| 1991 | 27 | 0 |
| 1992 | 49 | 0 |
| 1993 | 55 | 0 |
| 1994 | 44 | 0 |
| 1995 | 42 | 0 |
| 1996 | 38 | 0 |
| 1997 | 35 | 0 |
| 1998 | 74 | 0 |
| 1999 | 45 | 0 |
| 2000 | 65 | 0 |
| 2001 | 66 | 21 |
| 2002 | 80 | 62 |
| 2003 | 64 | 74 |
| 2004 | 58 | 102 |
| 2005 | 50 | 83 |
| 2006 | 58 | 85 |
| 2007 | 54 | 53 |
| 2008 | 50 | 79 |
| 2009 | 50 | 110 |
| 2010 | 67 | 110 |
| 2011 | 65 | 102 |
| 2012 | 79 | 98 |
| 2013 | 96 | 114 |
| 2014 | 105 | 119 |
| 2015 | 108 | 119 |
| 2016 | 111 | 120 |
| 2017 | 89 | 103 |
| 2018 | 94 | 94 |
| 2019 | 79 | 94 |
| 2020 | 94 | 93 |
| 2021 | 59 | 81 |
| 2022 | 59 | 89 |
| 2023 | 45 | 71 |
| 2024 | 43 | 83 |
| 2025 | 43 | 51 |
| 2026 | 16 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 67/333By isomerisation1,331
- C07C 67/31By introduction of functional groups containing oxygen only in singly bound form469
- C07C 67/317By splitting-off hydrogen or functional groups315
- C07C 67/303By hydrogenation of unsaturated carbon-to-carbon bonds280
- C07C 67/307By introduction of halogen219
- C07C 67/313By introduction of doubly bound oxygen containing functional groups171
Recent patents
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- Compound, composition, method for expressing sensitizing effect and production method8 Oct 2026US 2026/0308100 A1Mitsubishi Gas Chemical Company, Inc.
- Organic Photoredox Catalysts, Compositions, and Conversion Processes24 Sep 2026US 2026/0284647 A1Colorado State University Research Foundation
- Fragrance or flavour mixture10 Sep 2026US 2026/0265640 A1Symrise AG
- Novel ruthenium complexes, method of their synthesis, intermediate compounds used in this method, method of their synthesis and the use of novel ruthenium complexes in olefin metathesis reactions3 Sep 2026US 2026/0258066 A1
- Method for producing very-long-chain polyunsaturated fatty acid27 Aug 2026US 2026/0250228 A1Nissui Corporation
Most cited
By later US patents
- Immunotherapeutic agents153US 5,929,117 ACelgene Corporation · 1999
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Olefin metathesis coupling using ruthenium and osmium carbene complexes113US 5,750,815 ACalifornia Institute of Technology · 1998
- Method for producing unsaturated organics from organic-containing feeds109US 5,543,558 AMolten Metal Technology, Inc. · 1996
- Co-metathesis of triglycerides and ethylene104US 4,545,941 AA. E. Staley Manufacturing Company · 1985