C08C 2/00
Treatment of rubber solutions
C08C2/00 (Treatment of rubber solutions) appears on 153 US grants and 136 published applications in this corpus.
Search patents in C08C- Granted patents
- 153
- Published applications
- 136
- Assignees
- 75
- Inventors
- 371
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 2 | 3 |
| 2003 | 2 | 3 |
| 2004 | 2 | 5 |
| 2005 | 3 | 2 |
| 2006 | 1 | 4 |
| 2007 | 2 | 4 |
| 2008 | 1 | 2 |
| 2009 | 3 | 8 |
| 2010 | 4 | 0 |
| 2011 | 3 | 4 |
| 2012 | 1 | 4 |
| 2013 | 2 | 5 |
| 2014 | 2 | 6 |
| 2015 | 4 | 17 |
| 2016 | 7 | 9 |
| 2017 | 14 | 11 |
| 2018 | 5 | 8 |
| 2019 | 10 | 10 |
| 2020 | 8 | 8 |
| 2021 | 7 | 5 |
| 2022 | 5 | 7 |
| 2023 | 2 | 1 |
| 2024 | 4 | 4 |
| 2025 | 2 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Extraction of guayule resin28 Jul 2026US 12,691,391 B2Bridgestone Corporation
- Methods for producing polyisoprene latex dispersions12 May 2026US 12,624,131 B2Bridgestone Corporation
- Processes for the removal of rubber from non-Hevea plants15 Jul 2025US 12,359,004 B2Bridgestone Corporation
- Processes for increasing the molecular weight of guayule natural rubber25 Mar 2025US 12,258,427 B2Bridgestone Corporation
- Processes for removing color bodies from guayule3 Dec 2024US 12,157,780 B2Bridgestone Corporation
- Method for preparing heavy-duty tire with natural rubber modified by graphene/carbon blacks varying in particle size synergized with vulcanization system1 Jan 2026US 2026/0001968 A1North University of China
- Processes For The Removal Of Rubber From Non-Hevea Plants6 Nov 2025US 2025/0340676 A1Bridgestone Corporation
- Rubber composition comprising masterbatch25 Sep 2025US 2025/0297070 A1The Goodyear Tire & Rubber Company
- Processes For Removing Color Bodies From Guayule20 Mar 2025US 2025/0092163 A1Bridgestone Corporation
- Process for high yield, high purity extraction of rubber from non-hevea sources7 Nov 2024US 2024/0368634 A1Ohio State Innovation Foundation
Most cited
By later US patents
- Extraction and fractionation of biopolymers and resins from plant materials45US 7,259,231 B2Yulex Corporation · 2007
- Method of removing lithium compounds from a polymer39US 5,220,100 AShell Oil Company · 1993
- Guayule rubber, resin and bagasse recovery and purification processes38US 4,804,741 AAnver Bioscience Design, Inc. · 1989
- Solvent fractionation of guayule rubber37US 4,623,713 AThe Firestone Tire & Rubber Company · 1986
- Rapid expanded solvent extraction31US 7,790,036 B2Yulex Corporation · 2010