C07C 17/20
Of halogen atoms by other halogen atoms
Official title: of halogen atoms by other halogen atoms
C07C17/20 (Of halogen atoms by other halogen atoms) appears on 1,050 US grants and 735 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,050
- Published applications
- 735
- Assignees
- 201
- Inventors
- 1,109
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 6 | 0 |
| 1978 | 12 | 0 |
| 1979 | 12 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 9 | 0 |
| 1984 | 8 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 11 | 0 |
| 1989 | 13 | 0 |
| 1990 | 14 | 0 |
| 1991 | 20 | 0 |
| 1992 | 14 | 0 |
| 1993 | 22 | 0 |
| 1994 | 28 | 0 |
| 1995 | 21 | 0 |
| 1996 | 23 | 0 |
| 1997 | 24 | 0 |
| 1998 | 48 | 0 |
| 1999 | 36 | 0 |
| 2000 | 41 | 0 |
| 2001 | 37 | 6 |
| 2002 | 29 | 16 |
| 2003 | 24 | 22 |
| 2004 | 12 | 33 |
| 2005 | 15 | 32 |
| 2006 | 32 | 27 |
| 2007 | 28 | 29 |
| 2008 | 16 | 29 |
| 2009 | 13 | 36 |
| 2010 | 19 | 28 |
| 2011 | 26 | 47 |
| 2012 | 14 | 37 |
| 2013 | 37 | 23 |
| 2014 | 45 | 58 |
| 2015 | 35 | 34 |
| 2016 | 46 | 40 |
| 2017 | 32 | 31 |
| 2018 | 35 | 23 |
| 2019 | 34 | 33 |
| 2020 | 25 | 30 |
| 2021 | 31 | 38 |
| 2022 | 19 | 21 |
| 2023 | 16 | 20 |
| 2024 | 16 | 16 |
| 2025 | 10 | 12 |
| 2026 | 6 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Catalyst and process using the catalyst2 Jun 2026US 12,643,844 B2Mexichem Amanco Holdings S.A. De C.V.
- Method for manufacturing 2-Chloro-1, 1-difluoroethane (HCFC-142), 1,1,2-trifluoroethane (HFC-143), and (E)-1,2-difluoroethylene (HFO-1132(E)) and/or (Z)-1,2-difluoroethylene (HFO-1132(Z))10 Mar 2026US 12,570,590 B2Daikin Industries, Ltd.
- Process for preparing bromochloromethane3 Mar 2026US 12,565,461 B2Saltigo GmbH
- Method for improving stability of catalyst in recycling HFC-2324 Feb 2026US 12,558,681 B2Sinochem Lantian Co., Ltd.
- Method for producing fluoroethylene13 Jan 2026US 12,522,546 B2Daikin 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
- Preparation of an improved composition from 1-chloro-3,3,3-trifluoropropene (hfo-1233zd) high boiling residue by-product2 Jul 2026US 2026/0184656 A1Solstice Advanced Materials US, Inc.
- Method for producing purified 1,1,2-trifluoroethane (hfc-143), and composition containing hfc-14325 Jun 2026US 2026/0176222 A1Daikin Industries, Ltd.
- Fluorination processes11 Jun 2026US 2026/0159463 A1Oxford University Innovation Limited
- Compositions comprising 1,3,3,3-tetrafluoropropene, methods of making same, and uses thereof11 Jun 2026US 2026/0159738 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
- Phase transfer catalysis of heterogeneous reactions by quaternary salts123US 3,992,432 AContinental Oil Company · 1976
- Vapor phase process for making 1,1,1,3,3-pentafluoropropane and 1-chloro-3,3,3-trifluoropropene113US 5,710,352 AAlliedSignal Inc. · 1998
- Catalyst composition for the preparation of 3,3,3-trifluoropropene106US 4,465,786 AGeneral Electric Company · 1984
- Integrated process to produce 2,3,3,3-tetrafluoropropene101US 8,058,486 B2Honeywell International Inc. · 2011