C07C 67/333
By isomerisation
Official title: by isomerisation; by change of size of the carbon skeleton (introduction or elimination of carboxyl groups C07C67/313, C07C67/32)
C07C67/333 (By isomerisation) appears on 1,331 US grants and 1,234 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,331
- Published applications
- 1,234
- Assignees
- 781
- Inventors
- 3,578
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 10 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 1 | 0 |
| 1984 | 9 | 0 |
| 1985 | 12 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 11 | 0 |
| 1991 | 11 | 0 |
| 1992 | 29 | 0 |
| 1993 | 26 | 0 |
| 1994 | 30 | 0 |
| 1995 | 21 | 0 |
| 1996 | 16 | 0 |
| 1997 | 22 | 0 |
| 1998 | 41 | 0 |
| 1999 | 30 | 0 |
| 2000 | 36 | 0 |
| 2001 | 30 | 16 |
| 2002 | 49 | 45 |
| 2003 | 40 | 34 |
| 2004 | 31 | 56 |
| 2005 | 23 | 47 |
| 2006 | 35 | 45 |
| 2007 | 32 | 25 |
| 2008 | 25 | 38 |
| 2009 | 22 | 71 |
| 2010 | 39 | 55 |
| 2011 | 39 | 62 |
| 2012 | 39 | 59 |
| 2013 | 61 | 69 |
| 2014 | 55 | 65 |
| 2015 | 64 | 74 |
| 2016 | 59 | 66 |
| 2017 | 53 | 54 |
| 2018 | 47 | 42 |
| 2019 | 43 | 61 |
| 2020 | 41 | 46 |
| 2021 | 31 | 36 |
| 2022 | 30 | 51 |
| 2023 | 27 | 34 |
| 2024 | 20 | 34 |
| 2025 | 17 | 25 |
| 2026 | 4 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Biorenewable synthesis of hydroxy-hexanoate esters25 Aug 2026US 12,715,835 B2Wisconsin Alumni Research Foundation
- Preparation method and apparatus for methyl methacrylate16 Jun 2026US 12,655,085 B2Zhejiang Nhu Company Ltd.
- Fragrance or flavour mixture19 May 2026US 12,630,781 B2Symrise AG
- Method for producing organic compound13 Jan 2026US 12,522,577 B2M. Technique Co., Ltd.
- Catalyst and a process for the production of ethylenically unsaturated carboxylic acids or esters7 Oct 2025US 12,434,225 B2Mitsubishi Chemical UK Limited
- 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
- Process27 Aug 2026US 2026/0250230 A1Givaudan SA
- Intermolecular cyclopropanation of unsaturated hydrocarbons20 Aug 2026US 2026/0242327 A1The Penn State Research Foundation
Most cited
By later US patents
- Immunotherapeutic agents153US 5,929,117 ACelgene Corporation · 1999
- 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
- Polymer depolymerization using ruthenium and osmium carbene complexes98US 5,728,917 ACalifornia Institute of Technology · 1998