C07C 21/00
Acyclic unsaturated compounds containing halogen atoms
C07C21/00 (Acyclic unsaturated compounds containing halogen atoms) appears on 801 US grants and 830 published applications in this corpus.
Search patents in C07C- Granted patents
- 801
- Published applications
- 830
- Assignees
- 199
- Inventors
- 1,041
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 5 | 0 |
| 1978 | 9 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 12 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 2 |
| 2002 | 5 | 3 |
| 2003 | 3 | 6 |
| 2004 | 7 | 8 |
| 2005 | 4 | 19 |
| 2006 | 6 | 11 |
| 2007 | 12 | 35 |
| 2008 | 12 | 30 |
| 2009 | 11 | 38 |
| 2010 | 23 | 48 |
| 2011 | 45 | 56 |
| 2012 | 30 | 37 |
| 2013 | 39 | 23 |
| 2014 | 43 | 44 |
| 2015 | 28 | 26 |
| 2016 | 26 | 42 |
| 2017 | 35 | 52 |
| 2018 | 51 | 58 |
| 2019 | 60 | 55 |
| 2020 | 58 | 61 |
| 2021 | 53 | 55 |
| 2022 | 38 | 36 |
| 2023 | 20 | 26 |
| 2024 | 21 | 19 |
| 2025 | 15 | 22 |
| 2026 | 15 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for the production of trifluoroethylene6 Oct 2026US 12,753,134 B2Arkema France
- Method for producing reaction gas containing 1,1,2-trifluoroethane (r-143) and/or (e,z)-1,2-difluoroethylene (r-1132(e,z))6 Oct 2026US 12,753,135 B2Daikin Industries, Ltd.
- Catalytic hydrogenation of fluoroolefins, alpha-alumina supported palladium compositions and their use as hydrogenation catalysts6 Oct 2026US 12,753,136 B2The Chemours Company Fc, LLC
- Method for storing fluorobutene6 Oct 2026US 12,753,137 B2Resonac Corporation
- Fluorine-containing ether compound, surface treatment agent, fluorine-containing ether composition, coating liquid, article, and compound6 Oct 2026US 12,753,323 B2AGC Inc.
- Hfo-1234ze, hfo-1225zc and hfo-1234yf compositions and processes for producing and using the compositions8 Oct 2026US 2026/0309375 A1The Chemours Company Fc, LLC
- Hfo-1234ze and hfo-1234yf compositions and processes for producing and using the compositions24 Sep 2026US 2026/0285786 A1The Chemours Company Fc, LLC
- Azeotrope and azeotrope-like compositions of 1,1-difluoropropene (hfo-1252zc) and other compounds24 Sep 2026US 2026/0285787 A1
- Composition for heat transfer fluid, heat transfer apparatus, and heat transfer method13 Aug 2026US 2026/0234457 A1Daikin Industries, Ltd.
- Co-production of 1,1,1-trifluoropropene (1243zf) and e-1,1,1,4,4,4-hexafluoro-2-butene (e-1336mzz)6 Aug 2026US 2026/0225977 A1The Chemours Company Fc, LLC
Most cited
By later US patents
- Method for producing 1,1,1,3,3,-pentafluoropropane145US 6,111,150 ACentral Glass Company, Limited · 2000
- Fluorinated propenes from pentafluoropropane112US 5,986,151 AAlliedSignal Inc. · 1999
- Integrated process to produce 2,3,3,3-tetrafluoropropene101US 8,058,486 B2Honeywell International Inc. · 2011
- Process for producing 1,1,2,3-tetrachloropropene92US 4,650,914 AMonsanto Company · 1987
- Process for producing fluoropropenes91US 7,230,146 B2Honeywell International Inc. · 2007