US3756906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber polyester compositions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-01-18
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Granted: 1973-09-04
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Expires: 1991-01-18
Abstract
Abstract PHOSPHITE ESTERS ARE INCORPORATED INTO POLYESTER-REINFORCED RUBBERS TO DECREASE THERMAL DEGRADATION OF THE POLYESTER.
Inventors
- 👤 B Leyland
- 👤 N Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/31504; Y10T428/31786; Y10T428/31826
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |