C08F 8/16
Lactonisation
C08F8/16 (Lactonisation) appears on 43 US grants and 30 published applications in this corpus.
Search patents in C08F- Granted patents
- 43
- Published applications
- 30
- Assignees
- 27
- Inventors
- 125
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 3 |
| 2019 | 3 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 1 |
| 2022 | 2 | 4 |
| 2023 | 1 | 3 |
| 2024 | 0 | 2 |
| 2025 | 2 | 0 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Poly(vinyl alcohol) resin14 Jul 2026US 12,679,913 B2Sekisui Chemical Co., Ltd.
- Binder for secondary batteries21 Apr 2026US 12,609,321 B2Sumitomo Seika Chemicals Co., Ltd.
- Bundled yarn, hydraulic composition and molded body13 Jan 2026US 12,522,956 B2Kuraray Co., Ltd.
- Acrylic polymer18 Nov 2025US 12,473,388 B2Nippon Shokubai Co., Ltd.
- Curable composition, cured product and method for forming insulating film27 May 2025US 12,312,489 B2Tokyo Ohka Kogyo.Co., Ltd.
- Poly(vinyl alcohol) resin2 May 2024US 2024/0141082 A1Sekisui Chemical Co., Ltd.
- Optical grade moulding compositions having increased heat resistance8 Feb 2024US 2024/0043591 A1Rohm Co., Ltd.
- Vinyl alcohol copolymer, production method thereof, anti-dehydrating agent for cement slurry, and anti-dehydrating method for cement slurry6 Jul 2023US 2023/0212339 A1Kuraray Co., Ltd.
- Hydrophilic and oleophobic polymer27 Apr 2023US 2023/0129965 A1Sumitomo Chemical Company, Limited
- Binder for secondary batteries9 Feb 2023US 2023/0041792 A1Sumitomo Seika Chemicals Co., Ltd.
Most cited
By later US patents
- Polymeric supports40US 5,292,840 AMinnesota Mining and Manufacturing Company · 1994
- Lactone polyol esters as oleaginous additives37US 4,123,373 AExxon Research & Engineering Co. · 1978
- Lactone modified polymeric amines useful as oil soluble dispersant additives20US 4,866,142 AExxon Chemical Patents Inc. · 1989
- Unsaturated hydroxycarboxylic compounds useful as intermediates for preparing lubricant and fuel additives14US 5,777,142 AThe Lubrizol Corporation · 1998
- Photo-crosslinkable 2-pyrone polymers and processes for the manufacture thereof13US 3,969,323 AHoechst Aktiengesellschaft · 1976