C08F 36/08
Isoprene
C08F36/08 (Isoprene) appears on 135 US grants and 172 published applications in this corpus.
Search patents in C08F- Granted patents
- 135
- Published applications
- 172
- Assignees
- 81
- Inventors
- 385
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 4 |
| 2012 | 0 | 1 |
| 2013 | 4 | 8 |
| 2014 | 1 | 11 |
| 2015 | 10 | 14 |
| 2016 | 7 | 8 |
| 2017 | 10 | 5 |
| 2018 | 9 | 29 |
| 2019 | 9 | 19 |
| 2020 | 19 | 24 |
| 2021 | 19 | 13 |
| 2022 | 10 | 6 |
| 2023 | 8 | 12 |
| 2024 | 6 | 10 |
| 2025 | 7 | 3 |
| 2026 | 10 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- VOC-free coupling agents for rubber compositions4 Aug 2026US 12,698,377 B2The Goodyear Tire & Rubber Company
- Rubber composition production method, re-crosslinked rubber, tire, and rubber industrial product28 Apr 2026US 12,612,470 B2Bridgestone Corporation
- Iron bipyridine complex, preparation method of the same, and use of the same in polymerization of conjugated dienes21 Apr 2026US 12,606,583 B2Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences
- Rubber composition and tire24 Mar 2026US 12,583,952 B2The Goodyear Tire & Rubber Company
- Method for separating polyisoprene and other apolar valuable substances from vegetable feedstock24 Mar 2026US 12,583,953 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein
- Elastic sulfonated styrene diene block copolymers8 Oct 2026US 2026/0308343 A1Rensselaer Polytechnic Institute
- Functional copolymers and methods of preparation thereof5 Feb 2026US 2026/0035495 A1Kraton Corporation
- Method of manufacturing coordination compound of rare-earth element and method of polymerizing conjugated diene27 Nov 2025US 2025/0361332 A1Industrial Technology Research Institute
- Ethanol22 May 2025US 2025/0163199 A1Sekisui Chemical Co., Ltd.
- Iron-based catalyst and its application in catalytic diene polymerization9 Jan 2025US 2025/0011479 A1Qingdao University of Science and Technology
Most cited
By later US patents
- Isoprene polymerization process32US 4,696,984 AEnichem Elastomeri S.r l. · 1987
- Process for the polymerization or copolymerization of butadiene27US 4,710,553 AEnichem Elastomeri S.r l. · 1987
- Tire tread11US 10,357,998 B2Compagnie Generale Des Etablissements Michelin · 2019
- Hydrocarbon polymer additives and compositions prepared thereof11US 10,752,769 B2ExxonMobil Chemical Patents Inc. · 2020
- Bifunctionalized polymer10US 9,109,073 B1The Goodyear Tire & Rubber Company · 2015