C07C 49/88
Ketenes
Official title: Ketenes; Dimeric ketenes
C07C49/88 (Ketenes) appears on 34 US grants and 14 published applications in this corpus.
Search patents in C07C- Granted patents
- 34
- Published applications
- 14
- Assignees
- 21
- Inventors
- 77
- Latest grant
- 20 Nov 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 5 |
| 2009 | 4 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method for producing a prefabricated building material20 Nov 2018US 10,131,580 B2BASF SE
- Process for the manufacture of carboxylic anhydride23 Oct 2018US 10,106,485 B2Rhodia Acetow GmbH
- Method of making a paper and paperboard and the paper and paperboard thereof28 Feb 2017US 9,580,868 B2Solenis Technologies, L.P.
- Device and method for continuously preparing high-purity AKD without solvent7 Feb 2017US 9,562,027 B2Suzhou Tianma Specialty Chemicals Co., Ltd.
- Composition and use of hydrogenated alkyl ketene dimers14 Apr 2015US 9,005,398 B2Solenis Technologies, L.P.
- Process for Making Sorbic Acid from Renewable Materials20 Apr 2023US 2023/0118462 A1Celanese International Corporation
- Process for the manufacture of carboxylic anhydride16 Nov 2017US 2017/0327450 A1SOLVAY ACETOW GmbH
- Method for producing a prefabricated building material24 Aug 2017US 2017/0240467 A1BASF SE
- Method of making a paper and paperboard and the paper and paperboard thereof25 Feb 2016US 2016/0053438 A1Solenis Technologies, L.P.
- Device and method for continuously preparing high-purity akd without solvent5 Nov 2015US 2015/0315163 A1Suzhou Tianma Specialty Chemicals Co., Ltd.
Most cited
By later US patents
- Preparation of fluorocarbonyl compounds115US 4,357,282 AE. I. Du Pont de Nemours and Company · 1982
- Arylphenyl-substituted cyclic keto enols88US 6,451,843 B1Bayer Aktiengesellschaft · 2002
- Process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol74US 5,258,556 AEastman Kodak Company · 1993
- Process for the production of ketene dimers13US 5,502,218 AEka Nobel AB · 1996
- Process for the manufacture of alkyl ketene dimer10US 5,484,952 AHercules Incorporated · 1996