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US3661822A
Expired / Lapsed
US
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Stabilization of epdm rubber with epoxide-sulfide mixture
Assignee: Uniroyal Chemical Co Inc
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Filing: 1970-04-30
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Granted: 1972-05-09
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Expires: 1990-04-30
Abstract
Abstract STABILIZATION OF ETHYLENE-PROPYLENE-NON-CONJUGATED DIENE TERPOLYMER (EPDM) ELASTOMERS AGAINST HEAT AGING BY INCORPORATION OF AN EPOXIDE AND AN ORGANIC SULFIDE (E.G., AN OLEFIN OXIDE AND N-OCTYL DISULFIDE).
Inventors
- 👤 Charles W Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08L; C08L23/00; C08L23/02; C08L23/16; C08L63/00; C08L2201/00; C08L2201/08; C08L2666/00; C08L2666/02; C08L2666/14; C08L2666/22
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |