Description
Class C08C : TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
Subclass 4/00: Treatment of rubber before vulcanisation, not provided for in groups C08C 1/00-C08C 3/02
C08C 4/00
Sub-Class
Stats
- 28 US PATENTS IN FORCE
- 4 US APPLICATIONS PENDING
- 7 Total Patent Owners
- 125 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12258427 | Processes for increasing the molecular weight of guayule natural rubber | Dec 19, 19 | Mar 25, 25 | BRIDGESTONE CORPORATION |
| 11858003 | Systems and methods for the management of waste associated with processing guayule shrubs to extract rubber | Mar 07, 22 | Jan 02, 24 | BRIDGESTONE CORPORATION |
| 11773230 | Refresh agent | Jul 20, 20 | Oct 03, 23 | BRIDGESTONE AMERICAS TIRE OPERATIONS, LLC |
| 11680112 | Extrusion dryer for rubbery polymer, drying method of rubbery polymer, and production method of rubbery polymer | Oct 23, 17 | Jun 20, 23 | Zeon Corporation |
| 11267019 | Systems and methods for the management of waste associated with processing guayule shrubs to extract rubber | Oct 24, 19 | Mar 08, 22 | BRIDGESTONE CORPORATION |
| 11225532 | Rubber composition for tires, method for preparing rubber composition for tires, and tire | Apr 11, 18 | Jan 18, 22 | Sumitomo Rubber Industries Ltd. |
| 10988561 | Method for industrial production of trans-butadiene-isoprene copolymer rubber and apparatus therefor | Nov 15, 16 | Apr 27, 21 | Qingdao University Of Science And Technology; SHANDONG HUAJU POLYMER MATERIALS CO., LTD.; CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE CO., LTD.; |
| 10858454 | Rubber extraction method | Nov 03, 16 | Dec 08, 20 | LION-FLEX B.V. |
| 10808104 | Preparation method of scribing rubber cement of tire tread | Mar 12, 18 | Oct 20, 20 | Xuzhou College of Industrial Technology |
| 10759945 | Anti-adhesive composition for unvulcanized rubber | Feb 01, 19 | Sep 01, 20 | LION SPECIALTY CHEMICALS CO., LTD. |
| 10717838 | Refresh agent | Mar 13, 14 | Jul 21, 20 | BRIDGESTONE AMERICAS TIRE OPERATIONS, LLC |
| 10538600 | Natural rubber compounds with silica and use with tires | Jan 12, 16 | Jan 21, 20 | Cooper Tire and Rubber Company |
| 10526424 | Method for preparing high performance tread rubbers through filler silylation reaction catalyzed in situ by ionic liquids | Apr 20, 16 | Jan 07, 20 | SOUTH CHINA UNIVERSITY OF TECHNOLOGY; Beijing University of Chemical Technology; JIAXING BEIHUA POLYMER ADDITIVES CO., LTD.; BEIJING RED AVENUE INNOVA CO., LTD.; |
| 10471473 | Systems and methods for the management of waste associated with processing guayule shrubs to extract rubber | Jun 18, 13 | Nov 12, 19 | Bridgestone Corporation |
| 10377889 | Thermoplastic elastomer composition and production process for the same | Mar 23, 16 | Aug 13, 19 | Mitsui Chemicals Inc. |
| 10294309 | Extraction of polyisoprene with high molar mass | Apr 14, 16 | May 21, 19 | Association pour les Transferts de Technologies du Mans; Centre de cooperation internationale en recherche afronomique pour le developpement (CIRAD); |
| 10131763 | Modified natural rubber, process for producing same, rubber composition for tire, and pneumatic tire | Dec 02, 13 | Nov 20, 18 | Sumitomo Rubber Industries, Ltd. |
| 10132563 | Methods for the desolventization of bagasse | Feb 03, 17 | Nov 20, 18 | Bridgestone Corporation |
| 9969818 | Integrated process for processing and utilising the guayule plant | Oct 21, 15 | May 15, 18 | VERSALIS S.P.A. |
| 9790292 | Method of purifying polyolefin | Oct 23, 14 | Oct 17, 17 | LOTTE CHEMICAL CORPORATION |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0409,700 | METHOD FOR MANUFACTURING THERMOPLASTIC VULCANIZATES | Aug 30, 23 | Dec 12, 24 | Not available |
| 2024/0117,083 | CHLOROPRENE POLYMER, CHLOROPRENE POLYMER LATEX, METHOD FOR PRODUCING CHLOROPRENE POLYMER LATEX, COMPOUND COMPOSITION AND VALCANIZATION MOLDED BODY | Mar 24, 22 | Apr 11, 24 | DENKA COMPANY LIMITED |
| 2018/0319,904 | RUBBER EXTRACTION METHOD | Nov 03, 16 | Nov 08, 18 | Keygene N.V. |
| 2018/0223,004 | POLYISOPRENE PRODUCTION METHOD | Jun 22, 16 | Aug 09, 18 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 35 Months (last 2 years Issuances)
- 35 Months (last 5 years Issuances)