C07C 2/40
Of conjugated dienes
Official title: of conjugated dienes
C07C2/40 (Of conjugated dienes) appears on 38 US grants and 26 published applications in this corpus.
Search patents in C07C- Granted patents
- 38
- Published applications
- 26
- Assignees
- 36
- Inventors
- 92
- Latest grant
- 4 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 1 |
| 2006 | 3 | 1 |
| 2007 | 0 | 2 |
| 2008 | 2 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 2 | 6 |
| 2018 | 5 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Butadiene telomerization catalyst preparation and use thereof4 Jun 2024US 11,999,674 B2Dow Global Technologies LLC
- Butadiene telomerization catalyst preparation and use thereof1 Aug 2023US 11,713,286 B2Dow Global Technologies LLC
- Method to produce C4 olefins from natural gas-derived acetylene20 Dec 2022US 11,530,171 B2West Virginia University
- Butadiene telomerization catalyst and preparation thereof26 Apr 2022US 11,312,670 B2Dow Global Technologies LLC
- Catalytic process for diene dimerization12 May 2020US 10,647,631 B2Centre National de la Recherche Scientifique (CNRS)
- Method for producing alpha-olefin18 Jul 2024US 2024/0239727 A1Idemitsu Kosan Co., Ltd.
- Butadiene telomerization catalyst preparation and use thereof19 Oct 2023US 2023/0331643 A1Dow Global Technologies LLC
- Butadiene telomerization catalyst preparation and use thereof7 Jul 2022US 2022/0213006 A1Dow Global Technologies LLC
- Method to produce c4 olefins from natural gas-derived acetylene21 Oct 2021US 2021/0323893 A1West Virginia University
- Catalytic process for diene dimerization11 Jun 2020US 2020/0181041 A1Centre National de la Recherche Scientifique (CNRS)
Most cited
By later US patents
- Catalyst of polymerization, copolymerization and oligomerization of olefins and drolefins16US 4,147,664 A1979
- Squalane and isosqualane compositions and methods for preparing the same14US 8,586,814 B2Amyris, Inc. · 2013
- Production of high-vinyl group, low-molecular weight unsaturated hydrocarbon polymers12US 3,983,183 AChemische Werke Huls Aktiengesellschaft · 1976
- Addition of monomer in production of liquid polymers11US 4,268,705 APhillips Petroleum Company · 1981
- Sulfonated product of butadiene or isoprene oligomer and the production therefor9US 4,115,437 ASumitomo Chemical Company, Limited · 1978