US3798190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber blends containing an hydrogenated styrene butadiene random copolymer
Assignee: Bridgestone Corp
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Filing: 1970-08-19
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Granted: 1974-03-19
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Expires: 1990-08-19
Abstract
Abstract A RUBBER VULCANIZABLE COMPOSITION HAVING AN INCRESASED GREEN STRENGTH, WHICH COMPRISES A BLEND OF (A) AT LEAST ONE POLYMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, POLYISOPRENE, STYRENE-BUTADIENE COPOLYMER, POLYBUTADIENE, BUTYL RUBBER AND ETHYLENE-PROPYLENE TERPOLYMER AND (B) FROM 5 TO 95 PARTS BY WEIGHT OF SAID BLEND, GENATED COPOLYMER PER 100 PARTS BY WEIGHT OF SAID BLEND, SAID HYDROGENATED COPOLYMER HAVING POLYMERIC MONOMER UNITS WHICH CONSIST OF (1) STYRENIC UNITS, (2) CONJUGATED DIOLEFINIC UNITS, AND (3) HYDROGENATED CONJUGATED DIOLEFINIC UNITS, WHEREIN THE STYRENIC UNITS ARE RANDOMLY DISTRIBUTED IN THE POLYMERIC MONOMER UNITS.
Inventors
- 👤 T Yoshimoto
- 👤 T Imamura
- 👤 K Tanaka
- 👤 A Miyagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
C; C08; C08L; C08L21/00; C08C; C08C19/00; C08C19/02; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |