C07D 331/02
Three-membered rings
C07D331/02 (Three-membered rings) appears on 86 US grants and 73 published applications in this corpus.
Search patents in C07D- Granted patents
- 86
- Published applications
- 73
- Assignees
- 50
- Inventors
- 178
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 4 |
| 2003 | 5 | 5 |
| 2004 | 1 | 2 |
| 2005 | 0 | 4 |
| 2006 | 3 | 1 |
| 2007 | 4 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 2 | 3 |
| 2014 | 0 | 4 |
| 2015 | 3 | 6 |
| 2016 | 6 | 3 |
| 2017 | 3 | 7 |
| 2018 | 8 | 4 |
| 2019 | 4 | 1 |
| 2020 | 1 | 4 |
| 2021 | 2 | 2 |
| 2022 | 2 | 1 |
| 2023 | 1 | 3 |
| 2024 | 2 | 4 |
| 2025 | 2 | 5 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composition, and optical material and lens using same2 Dec 2025US 12,486,352 B2Mitsubishi Gas Chemical Company, Inc.
- In situ generated solid electrolyte for energy storage12 Aug 2025US 12,388,114 B2Mercedes-Benz Research & Development North America, Inc.
- Allyl compound and composition for optical material2 Apr 2024US 11,945,791 B2Mitsubishi Gas Chemical Company, Inc.
- Episulfide compound and composition for optical material2 Jan 2024US 11,858,920 B2Mitsubishi Gas Chemical Company, Inc.
- Phenol derivative, and preparation process and use thereof17 Oct 2023US 11,787,757 B2China Petroleum & Chemical Corporation
- Episulfide composition, polymerizable composition, cured product, optical material, and lens6 Aug 2026US 2026/0226236 A1Mitsui Chemicals, Inc.
- Episulfide compound and optical material composition thereof8 Jan 2026US 2026/0008766 A1Efirm New Material Co., Ltd.
- Monomer for optical component, polymerizable composition for optical component, cured product, and spectacle lens11 Dec 2025US 2025/0376456 A1Hoya Lens Thailand Ltd.
- Fluorene compound containing thioepoxy and (meth)allyl groups, and production method therefor28 Aug 2025US 2025/0270183 A1Shin-Etsu Chemical Co., Ltd.
- Production method for episulfide compound22 May 2025US 2025/0163014 A1Mitsubishi Gas Chemical Company, Inc.
Most cited
By later US patents
- Alkyl sulfide type episulfide compound74US 5,807,975 AMitsubishi Gas Chemical Company, Inc. · 1998
- Episulfide compound67US 5,945,504 AMitsubishi Gas Chemical Company, Inc. · 1999
- Polymerizable composition27US 6,300,464 B2Mitsui Chemical, Inc. · 2001
- Polyfunctional thiirane compounds26US 6,631,021 B2PPG Industries Ohio, Inc. · 2003
- Mixtures of one or more t-mercapto terpene isomers and .alpha.-terpineol, .beta.-phenylethyl alcohol, 3-methyl-1-phenyl-pentanol-5 and/or butanoyl cyclohexane derivatives, organoleptic uses thereof and process for preparing same18US 4,620,945 AInternational Flavors & Fragrances Inc. · 1986