C07C 319/22
Preparation of thiols, sulfides, hydropolysulfides or polysulfides: of hydropolysulfides or polysulfides
Official title: of hydropolysulfides or polysulfides
C07C319/22 (Preparation of thiols, sulfides, hydropolysulfides or polysulfides: of hydropolysulfides or polysulfides) appears on 206 US grants and 142 published applications in this corpus.
Search patents in C07C- Granted patents
- 206
- Published applications
- 142
- Assignees
- 132
- Inventors
- 489
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 1 |
| 2002 | 5 | 5 |
| 2003 | 9 | 4 |
| 2004 | 2 | 4 |
| 2005 | 4 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 2 |
| 2008 | 2 | 5 |
| 2009 | 1 | 4 |
| 2010 | 2 | 6 |
| 2011 | 4 | 9 |
| 2012 | 3 | 4 |
| 2013 | 3 | 11 |
| 2014 | 6 | 6 |
| 2015 | 6 | 8 |
| 2016 | 1 | 6 |
| 2017 | 5 | 7 |
| 2018 | 7 | 16 |
| 2019 | 11 | 8 |
| 2020 | 14 | 8 |
| 2021 | 4 | 5 |
| 2022 | 2 | 5 |
| 2023 | 4 | 7 |
| 2024 | 3 | 2 |
| 2025 | 2 | 2 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing trisulfide compound or selenotrisulfide compound1 Sep 2026US 12,723,021 B2Kyowa Pharma Chemical Co., Ltd.
- Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition27 Jan 2026US 12,534,431 B2Mitsui Chemicals, Inc.
- Method of producing polyamine compound and application thereof16 Dec 2025US 12,497,357 B2Mitsui Chemicals, Inc.
- Process for the co-production of methyl mercaptan and of dimethyl disulfide from carbon oxides18 Feb 2025US 12,227,468 B2Arkema France
- Method for oxidation of sulfur-containing compounds5 Nov 2024US 12,134,593 B2WiSys Technology Foundation, Inc.
- Modified cystamine curing agent and preparation method therefor, and self-repairing polyurethane and preparation method therefor16 Jul 2026US 2026/0201101 A1Aerospace Research Institute of Materials & Processing Technology
- Polysulfide resin, precursor, method for producing polysulfide resin, optical element, optical system, lens for infrared camera, and optical device9 Jul 2026US 2026/0194692 A1Nikon Corporation
- Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition23 Apr 2026US 2026/0109667 A1Mitsui Chemicals, Inc.
- Method of producing polyamine compound and application thereof15 Jan 2026US 2026/0015320 A1Mitsui Chemicals, Inc.
- Method for producing aryl ester-containing carboxylic acid and method for producing cationic lipid3 Jul 2025US 2025/0214935 A1Nof Corporation
Most cited
By later US patents
- Organic salts of N,N'-diacetyl cystine53US 5,385,904 AAktiebolaget Astra · 1995
- Sulfurized phenolic antioxidant composition, method of preparing same, and petroleum products containing same42US 6,096,695 AEthyl Corporation · 2000
- Oxidation of thiols employing cobalt molybdate/triethylamine catalyst40US 4,288,627 APhillips Petroleum Company · 1981
- Process for the production of dialkyl-trisulfides30US 4,564,709 APennwalt Corporation · 1986
- Preparation of alkyl polysulfides28US 4,125,552 ADow Corning Corporation · 1978