C07C 11/18
Isoprene
C07C11/18 (Isoprene) appears on 32 US grants and 38 published applications in this corpus.
Search patents in C07C- Granted patents
- 32
- Published applications
- 38
- Assignees
- 22
- Inventors
- 93
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 2 |
| 2012 | 2 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 1 | 7 |
| 2017 | 3 | 2 |
| 2018 | 3 | 7 |
| 2019 | 4 | 4 |
| 2020 | 1 | 1 |
| 2021 | 3 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Antifoulant compositions for high-severity processing of vinylic monomer streams1 Jul 2025US 12,344,581 B2Ecolab USA Inc.
- Systems and methods for isoprene purification13 Sep 2022US 11,440,859 B2Sabic Global Technologies B.V.
- Method for producing conjugated diene3 May 2022US 11,319,261 B2Kuraray Co., Ltd.
- Method for producing conjugated diene14 Dec 2021US 11,198,657 B2Kuraray Co., Ltd.
- Systems and methods for isoprene purification9 Nov 2021US 11,168,042 B2Sabic Global Technologies B.V.
- Antifoulant compositions for high-severity processing of vinylic monomer streams11 Sep 2025US 2025/0282698 A1Ecolab USA Inc.
- Method for decomposing crosslinked rubber10 Apr 2025US 2025/0115732 A1Bridgestone Corporation
- Antifoulant compositions for high-severity processing of vinylic monomer streams5 Oct 2023US 2023/0312440 A1Ecolab USA Inc.
- Systems and methods for isoprene purification3 Feb 2022US 2022/0033329 A1Sabic Global Technologies B.V.
- Methods For Extracting Essential Oils, Terpenes, Terpenoids And Other Organic Matter From Plants; And Related Systems And Devices1 Apr 2021US 2021/0095226 A1
Most cited
By later US patents
- Compositions and methods for producing isoprene free of C5 hydrocarbons under decoupling conditions and/or safe operating ranges18US 8,420,360 B2Danisco US Inc. · 2013
- Isoamylenes from butenes10US 4,085,158 APhillips Petroleum Company · 1978
- Process for preparation of isoprene9US 3,972,955 ABayer Aktiengesellschaft · 1976
- Process of obtaining an isoprene-enriched FCC C5 fraction and selective polymerization of isoprene from said fraction7US 7,157,533 B2Michelin Recherche et Technique S. A. · 2007
- Production of isoprene from isobutane6US 4,091,046 APhillips Petroleum Company · 1978