C07C 67/297
By splitting-off hydrogen or functional groups
Official title: by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
C07C67/297 (By splitting-off hydrogen or functional groups) appears on 90 US grants and 83 published applications in this corpus.
Search patents in C07C- Granted patents
- 90
- Published applications
- 83
- Assignees
- 69
- Inventors
- 272
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 5 |
| 2004 | 0 | 4 |
| 2005 | 2 | 4 |
| 2006 | 3 | 4 |
| 2007 | 3 | 2 |
| 2008 | 0 | 1 |
| 2009 | 2 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 4 | 6 |
| 2014 | 4 | 8 |
| 2015 | 6 | 8 |
| 2016 | 9 | 9 |
| 2017 | 6 | 3 |
| 2018 | 5 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 1 |
| 2022 | 2 | 5 |
| 2023 | 3 | 1 |
| 2024 | 0 | 3 |
| 2025 | 2 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for synthesizing xanthohumol11 Aug 2026US 12,703,673 B2Pro Xn Sp. Z O.O.
- Chemical and biological integrated degradation process for polyethylene terephthalate (PET), for recycling pet24 Feb 2026US 12,559,776 B2Korea University Research and Business Foundation
- Process for making a conjugated diene from an allyl alcohol1 Jul 2025US 12,344,569 B2Givaudan SA
- Process for the synthesis of cannabidiol and intermediates thereof25 Feb 2025US 12,234,203 B2Council of Scientific and Industrial Research An Indian Registered Body Incorporated Under the Regn. of Soc. Act (Act Xxi of 1860)
- Kinetic resolution reaction of a (1RS,2SR)-(2-hydroxy-3,5,5-trimethyl-3-cyclopentenyl)methyl carboxylate compound, a process for preparing optically active trans-α-necrodyl isobutyrate, and a process for preparing optically active γ-necrodyl isobutyrate5 Sep 2023US 11,746,078 B2Shin-Etsu Chemical Co., Ltd.
- Method for depolymerizing polyethylene terephthalate9 Jul 2026US 2026/0193444 A1King Fahd University of Petroleum and Minerals
- Process for preparing benzoic acid esters and intermediates thereof29 Jan 2026US 2026/0028302 A1
- Preparation method of ion catalyst material for pet chemical recycling and pet chemical recycling method8 Jan 2026US 2026/0008036 A1Nan Ya Plastics Corporation
- 5-(2-butyl-1,3-dioxolan-2-yl)-1-methylpentyl acetate and process for preparing 2,7-diacetoxyundecane therefrom9 Oct 2025US 2025/0313543 A1Shin-Etsu Chemical Co., Ltd.
- Method for producing aromatic bis(hydroxyalkyl) dicarboxylate and method for producing recycled aromatic polyester2 Oct 2025US 2025/0304522 A1Teijin Frontier Co., Ltd.
Most cited
By later US patents
- Preparation of ethyl acetate123US 4,465,854 AEastman Kodak Company · 1984
- Preparation of ethyl acetate123US 4,886,905 AEastman Kodak Company · 1989
- Preparation of ethyl acetate121US 4,471,136 AEastman Kodak Company · 1984
- Process for producing vinyl acetate63US 4,843,170 AMitsubishi Gas Chemical Company, Inc. · 1989
- Impurity inhibition in olefin metathesis reactions57US 6,900,347 B2TillieChem, Inc. · 2005