US3741924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber composition
Assignee: Taoka Chemical Co Ltd
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Filing: 1970-02-13
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Granted: 1973-06-26
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Expires: 1990-02-13
Abstract
Abstract THERE IS OBTAINED AN ETHYLENE-PROPYLENE-NON-CONJUGATED DIENE TERPOLYMER RUBBER COMPOSITION WITH IMPROVED TACKINESS AND PROCESSABILITY IN THE UNVULCANIZED STATE, BUT NEVERTHELESS, WITH SUBSTANTIALLY THE SAME PHYSICAL PROPERTIES IN THE VULCANIZED STATE AS THAT OF A CONVENTIONAL COMPOSITION OF SAID TERPOLYMER RUBBER, BY INCORPORATING INTO 10/ PARTS BY WEIGHT OF SAID TERPOLYMER 1-40, PREFERABLY 2-30, PARTS BY WEIGHT OF AN ETHYLENE-A-OLEFIN COPOLYMER AND 0.5-30, PREFERABLY 1-20, PARTS BY WEIGHT OF AN ALKYLPHENOL-FORMALDEHYDE RESIN, A MODIFIED ALKYLPHENOL-FORMALDEHYDE RESIN, ROSIN ESTER, OR A MIXTURE OF THESE RESINS.
Inventors
- 👤 T Okita
- 👤 N Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:20
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G8/30; C08L; C08L23/00; C08L23/02; C08L23/16; C08L2205/00; C08L2205/02; C08L2314/00; C08L2314/02; C08L61/00; C08L61/04; C08L61/06; C08L93/00; C08L93/04
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |