C07C 37/20
Using aldehydes or ketones
Official title: using aldehydes or ketones
C07C37/20 (Using aldehydes or ketones) appears on 433 US grants and 272 published applications in this corpus.
Search patents in C07C- Granted patents
- 433
- Published applications
- 272
- Assignees
- 162
- Inventors
- 946
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 11 | 0 |
| 1982 | 10 | 0 |
| 1983 | 10 | 0 |
| 1984 | 10 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 13 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 10 | 0 |
| 1994 | 12 | 0 |
| 1995 | 12 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 13 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 13 | 2 |
| 2002 | 9 | 6 |
| 2003 | 10 | 22 |
| 2004 | 16 | 22 |
| 2005 | 13 | 17 |
| 2006 | 16 | 9 |
| 2007 | 5 | 8 |
| 2008 | 4 | 10 |
| 2009 | 4 | 8 |
| 2010 | 6 | 10 |
| 2011 | 12 | 13 |
| 2012 | 7 | 18 |
| 2013 | 13 | 5 |
| 2014 | 12 | 12 |
| 2015 | 12 | 9 |
| 2016 | 7 | 8 |
| 2017 | 11 | 17 |
| 2018 | 9 | 9 |
| 2019 | 7 | 13 |
| 2020 | 15 | 9 |
| 2021 | 5 | 13 |
| 2022 | 7 | 8 |
| 2023 | 3 | 2 |
| 2024 | 2 | 10 |
| 2025 | 8 | 10 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation method for methylphenol and homologue15 Sep 2026US 12,735,376 B2Dalian University of Technology
- Process for preparing bisphenol a (BPA) in the presence of at least two impurities23 Jun 2026US 12,662,442 B2Covestro Deutschland AG
- Bisphenol composition and polycarbonate resin13 Jan 2026US 12,522,696 B2Mitsubishi Chemical Corporation
- Processes for forming bisphenols, epoxy resin compositions2 Dec 2025US 12,486,354 B2Westlake Epoxy Inc.
- Method for producing 1,1,1-trifluoro-2,2-bisarylethane, and 1,1,1-trifluoro-2,2-bisarylethane7 Oct 2025US 12,435,185 B2Central Glass Company, Limited
- Method for producing compound, polymer, composition, and pattern formation method23 Jul 2026US 2026/0209160 A1Mitsubishi Gas Chemical Company, Inc.
- Catalyst system and process for producing bisphenol-a11 Jun 2026US 2026/0158479 A1Badger Licensing LLC
- Cardanol-based bisphenol, preparation method therefor and application thereof25 Sep 2025US 2025/0296905 A1Nasurfar Biomaterial Technology (Changshu) Co., Ltd.
- Method for manufacturing bisphenol a24 Jul 2025US 2025/0236718 A1National Taiwan University
- Preparation method for methylphenol and homologue10 Jul 2025US 2025/0223251 A1Dalian University of Technology
Most cited
By later US patents
- Certain aryl or hetero-aryl derivatives of 1-hydroxy-pentane or 1-hydroxy-hexane which are useful for treating inflammation and allergies65US 4,567,184 AUSV Pharmaceutical Corporation · 1986
- Certain unsymmetrical quinolinyl ethers having anti-inflammatory and anti-allergic activity63US 4,794,188 AUSV Pharmaceutical Corporation · 1988
- Ion exchange catalyzed bisphenol synethesis55US 4,400,555 AGeneral Electric Company · 1983
- Preparation of bisphenols50US 4,191,843 AShell Oil Company · 1980
- Cycloolefin polymerization catalyst composition48US 4,568,660 AHercules Incorporated · 1986