C07C 51/64
Separation
Official title: Separation; Purification; Stabilisation; Use of additives
C07C51/64 (Separation) appears on 52 US grants and 41 published applications in this corpus.
Search patents in C07C- Granted patents
- 52
- Published applications
- 41
- Assignees
- 40
- Inventors
- 160
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 2 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 4 |
| 2018 | 3 | 2 |
| 2019 | 1 | 4 |
| 2020 | 4 | 5 |
| 2021 | 5 | 3 |
| 2022 | 1 | 3 |
| 2023 | 0 | 2 |
| 2024 | 3 | 6 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for removal of sulfur dioxide (SO2) from trifluoroacetyl chloride (TFAC)14 Jul 2026US 12,679,800 B2Solstice Advanced Materials US, Inc.
- Method of purifying carboxylic acid fluoride2 Dec 2025US 12,486,213 B2Kanto Denka Kogyo Co., Ltd.
- Processes for producing trifluoroiodomethane and trifluoroacetyl iodide22 Apr 2025US 12,281,053 B2Honeywell International Inc.
- Processes for preparing aldaric, aldonic, and uronic acids22 Oct 2024US 12,122,745 B2Archer Daniels Midland Company
- Methods for removal of sulfur dioxide (SO2) from trifluoroacetyl chloride (TFAC)21 May 2024US 11,987,553 B2Honeywell International Inc.
- Methods for removal of sulfur dioxide (so2) from trifluoroacetyl chloride (tfac)3 Sep 2026US 2026/0257984 A1Solstice Advanced Materials US, Inc.
- Preparation and purification of cis-2-alkenoic acids13 Nov 2025US 2025/0346551 A1Bromine Compounds Ltd.
- Salt crystals24 Apr 2025US 2025/0129087 A1Intra-Cellular Therapies, Inc.
- Methods for removal of sulfur dioxide (so2) from trifluoroacetyl chloride (tfac)12 Sep 2024US 2024/0300884 A1Honeywell International Inc.
- Methods for solvation and removal of iodine (i2)-containing species22 Aug 2024US 2024/0279151 A1Honeywell International Inc.
Most cited
By later US patents
- Continuous process for preparing derivatives of benzene with fluorinated side chains from the corresponding chlorine compounds10US 3,966,832 AHoechst Aktiengesellschaft · 1976
- Processes for producing trifluoroiodomethane and trifluoroacetyl iodide4US 10,954,177 B2Honeywell International Inc. · 2021
- Fluorination of acrylate esters and derivatives4US 9,061,990 B2Relypsa, Inc. · 2015
- Color-stabilized aromatic carboxylic acid chlorides and a process for their preparation3US 4,294,777 ABayer Aktiengesellschaft · 1981
- Process for obtaining substituted fluorobenzenes3US 4,868,347 ABayer Aktiengesellschaft · 1989