C07C 17/21
With simultaneous increase of the number of halogen atoms
Official title: with simultaneous increase of the number of halogen atoms
C07C17/21 (With simultaneous increase of the number of halogen atoms) appears on 318 US grants and 192 published applications in this corpus.
Search patents in C07C- Granted patents
- 318
- Published applications
- 192
- Assignees
- 81
- Inventors
- 397
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 12 | 0 |
| 1994 | 17 | 0 |
| 1995 | 9 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 25 | 0 |
| 1999 | 16 | 0 |
| 2000 | 17 | 0 |
| 2001 | 14 | 2 |
| 2002 | 12 | 11 |
| 2003 | 10 | 12 |
| 2004 | 4 | 11 |
| 2005 | 3 | 14 |
| 2006 | 18 | 9 |
| 2007 | 14 | 13 |
| 2008 | 4 | 10 |
| 2009 | 5 | 18 |
| 2010 | 7 | 11 |
| 2011 | 12 | 7 |
| 2012 | 4 | 9 |
| 2013 | 7 | 5 |
| 2014 | 8 | 5 |
| 2015 | 8 | 6 |
| 2016 | 2 | 5 |
| 2017 | 6 | 6 |
| 2018 | 8 | 7 |
| 2019 | 5 | 6 |
| 2020 | 5 | 6 |
| 2021 | 7 | 5 |
| 2022 | 3 | 5 |
| 2023 | 2 | 2 |
| 2024 | 3 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for synthesis of fluorinated olefins13 Jan 2026US 12,522,547 B2Solstice Advanced Materials US, Inc.
- Process for producing 1,1,1,4,4,4-hexafluorobut-2-ene23 Sep 2025US 12,421,181 B2The Chemours Company Fc, LLC
- Catalyst activation method15 Jul 2025US 12,357,968 B2Mexichem Fluor S.A. De C.V.
- System, method, and reaction apparatus used for continuous reaction process for preparation of trifluoroethane11 Jun 2024US 12,005,431 B2Beijing University of Chemical Technology
- Processes for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene and intermediates for producing same27 Feb 2024US 11,912,639 B2The Chemours Company Fc, LLC
- Process for synthesis of fluorinated olefins23 Apr 2026US 2026/0109659 A1Solstice Advanced Materials US, Inc.
- Method for producing chlorofluorobutane (cfb)26 Feb 2026US 2026/0055039 A1Kanto Denka Kogyo Co., Ltd.
- Process for producing 1,1,1,4,4,4-hexafluorobut-2-ene12 Feb 2026US 2026/0042721 A1The Chemours Company Fc, LLC
- Method16 Oct 2025US 2025/0319455 A1Mexichem Fluor S.A. De C.V.
- Method for producing (e)-1,1,1,4,4,4-hexafluoro-2-butene5 Dec 2024US 2024/0400478 A1Resonac Corporation
Most cited
By later US patents
- Vapor phase process for making 1,1,1,3,3-pentafluoropropane and 1-chloro-3,3,3-trifluoropropene113US 5,710,352 AAlliedSignal Inc. · 1998
- Processes for synthesis of tetrafluoropropene75US 7,189,884 B2Honeywell International Inc. · 2007
- Gas phase fluorination of 1230za67US 5,811,603 AElf Atochem North America, Inc. · 1998
- Process for preparing fluorinated aliphatic compounds63US 5,616,819 ALaRoche Industries, Inc. · 1997
- Process for the preparation of 1,1,1,3,3-pentafluoropropane62US 5,969,198 AAlliedSignal Inc. · 1999