US3564080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable compositions comprising a major portion of epr or epdm and a minor portion of amorphous polypropylene
Assignee: Montedison SpA
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Filing: 1968-07-09
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Granted: 1971-02-16
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Expires: 1988-07-09
Abstract
Abstract VULCANIZABLE HIGH MOLECULAR WEIGHT ELASTOMER COMPOSITIONS COMPRISING (1) A HIGH MOLECULAR WEIGHT VULCANIZABLE ELASTOMER SELECTED FROM (A) SATURATED COPOLYMERS OF ETHYLENE AND PROPYLENE OR BUTENE-1, AND (B) LOW-UNSATURATION TERPOLYMERS OF ETHYLENE, PROPYLENE AND A NON-CONJUGATED POLYENE, (2) AN EXTENDER COMPRISING FROM ABOUT 1 TO 90 PARTS OF SUBSTANTIALLY AMORPHOUS POLYPROPYLENE PER 100 PARTS OF SAID VULCANIZABLE ELASTOMER; AND (3) A CURING AGENT.
Inventors
- 👤 Giovanni Pedretti
- 👤 Gino Panciroli
- 👤 Augusto Portolani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:36
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/14; C08K5/16; C08K5/17; C08L23/10; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |