C08C 4/00
Treatment of rubber before vulcanisation, not provided for in groups c08c1/00 -
Official title: Treatment of rubber before vulcanisation, not provided for in groups C08C1/00 - C08C3/02
C08C4/00 (Treatment of rubber before vulcanisation, not provided for in groups c08c1/00 -) appears on 31 US grants and 33 published applications in this corpus.
Search patents in C08C- Granted patents
- 31
- Published applications
- 33
- Assignees
- 36
- Inventors
- 106
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 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 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 4 |
| 2016 | 0 | 1 |
| 2017 | 3 | 2 |
| 2018 | 3 | 8 |
| 2019 | 3 | 2 |
| 2020 | 5 | 3 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 3 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- Liquid antiadhesive composition for unvulcanized rubber, water-diluted liquid antiadhesive composition solution for unvulcanized rubber, and unvulcanized rubber17 Mar 2026US 12,577,509 B2Lion Specialty Chemicals Co., Ltd.
- Processes for increasing the molecular weight of guayule natural rubber25 Mar 2025US 12,258,427 B2Bridgestone Corporation
- Systems and methods for the management of waste associated with processing guayule shrubs to extract rubber2 Jan 2024US 11,858,003 B2Bridgestone Corporation
- Refresh agent3 Oct 2023US 11,773,230 B2Bridgestone Americas Tire Operations, LLC
- Method and processing facility for processing styrene acrylonitrile29 Jan 2026US 2026/0028431 A1Coperion GmbH
- Flexible Material Based On Resource Utilization Of Waste Finished Leathers And Waste Fabrics And Preparation Method Thereof24 Jul 2025US 2025/0236724 A1Xinji City Baolong Technology Co., Ltd.
- Method for manufacturing thermoplastic vulcanizates12 Dec 2024US 2024/0409700 A1Nantex Industry Co., Ltd.
- Chloroprene polymer, chloroprene polymer latex, method for producing chloroprene polymer latex, compound composition and valcanization molded body11 Apr 2024US 2024/0117083 A1Denka Company Limited
- Liquid antiadhesive composition for unvulcanized rubber, water-diluted liquid antiadhesive composition solution for unvulcanized rubber, and unvulcanized rubber29 Feb 2024US 2024/0067903 A1Lion Specialty Chemicals Co., Ltd.
Most cited
By later US patents
- Extraction of rubber or rubberlike substances from fibrous plant materials40US 4,136,131 AThe United States of America as represented by the Secretary of Agriculture · 1979
- Method for extracting polyisoprenes from plants33US 5,321,111 A1994
- Process for recovering rubber from rubber-bearing plants with a gristmill31US 7,540,438 B22009
- Processing of guayule material by volatilizing and heating steps25US 4,376,853 AThe Firestone Tire & Rubber Company · 1983
- Methods for desolventization of bagasse17US 9,562,720 B2Bridgestone Corporation · 2017