C07C 41/22
By introduction of halogens
Official title: by introduction of halogens; by substitution of halogen atoms by other halogen atoms
C07C41/22 (By introduction of halogens) appears on 357 US grants and 202 published applications in this corpus.
Search patents in C07C- Granted patents
- 357
- Published applications
- 202
- Assignees
- 200
- Inventors
- 843
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 8 | 0 |
| 1980 | 13 | 0 |
| 1981 | 17 | 0 |
| 1982 | 13 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 14 | 0 |
| 1987 | 10 | 0 |
| 1988 | 11 | 0 |
| 1989 | 13 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 14 | 2 |
| 2002 | 4 | 7 |
| 2003 | 8 | 7 |
| 2004 | 4 | 6 |
| 2005 | 2 | 2 |
| 2006 | 4 | 5 |
| 2007 | 5 | 4 |
| 2008 | 1 | 12 |
| 2009 | 3 | 9 |
| 2010 | 3 | 8 |
| 2011 | 6 | 11 |
| 2012 | 4 | 10 |
| 2013 | 7 | 10 |
| 2014 | 8 | 11 |
| 2015 | 14 | 9 |
| 2016 | 5 | 7 |
| 2017 | 5 | 11 |
| 2018 | 8 | 11 |
| 2019 | 10 | 6 |
| 2020 | 10 | 15 |
| 2021 | 8 | 3 |
| 2022 | 10 | 10 |
| 2023 | 2 | 11 |
| 2024 | 3 | 6 |
| 2025 | 3 | 3 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Direct aromatic carbon-oxygen and carbon-hydrogen bond functionalization via organic photoredox catalyst8 Sep 2026US 12,729,169 B2The University of North Carolina at Chapel Hill
- Method for producing composition containing purified fluorine-containing ether compound8 Sep 2026US 12,729,175 B2Daikin Industries, Ltd.
- Method for producing fluorine-containing olefin31 Mar 2026US 12,590,047 B2AGC Inc.
- Photoredox-catalyzed direct C—H functionalization of arenes27 Jan 2026US 12,534,437 B2The University of North Carolina at Chapel Hill
- Nebivolol synthesis method and intermediate compound thereof11 Nov 2025US 12,466,802 B2Zhejiang Ausun Pharmaceutical Co., Ltd.
- Substituted Hydroxystilbene Compounds and Derivatives, Synthesis and Uses Thereof23 Jul 2026US 2026/0209152 A1Kynan Duke IP, LLC
- Efficient oxidative chlorination and bromination method of olefins with selectfluor and tbax (cl, br)18 Jun 2026US 2026/0167592 A1TatüRk üNiversitesi Fikri MüLkiyet Haklari KoordinatöRlüGü DöNer Sermaye Isletmesi
- Methods of making and using 1-methyleffusol11 Jun 2026US 2026/0159465 A1
- Fluorine-containing compound production method11 Jun 2026US 2026/0159529 A1AGC Inc.
- Method for producing composition containing purified fluorine-containing ether compound5 Mar 2026US 2026/0062372 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Liquid phase fluorination77US 5,093,432 AExfluor Research Corporation · 1992
- Liquid crystalline cyclohexylphenyl derivatives74US 4,400,293 AMerck Patent GmbH · 1983
- Continuous bromination process and products thereof61US 5,741,949 AGreat Lakes Chemical Corporation · 1998
- Bromination process59US 5,055,235 AEthyl Corporation · 1991
- Omega-hydrofluoroalkyl ethers, precursor carboxylic acids and derivatives thereof, and their preparation and application59US 5,658,962 AMinnesota Mining and Manufacturing Company · 1997