US3751375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of polyurethane compositions and resins used to prepare polyurethane compositions
Assignee: Goodyear Tire and Rubber Co
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Filing: 1972-02-29
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Granted: 1973-08-07
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Expires: 1992-02-29
Abstract
Abstract POLYURETHANE COMPOSITONS, INCLUDING POLYURETHANE FOAM COMPOSITIONS, AND RESINS FROM WHICH SAID COMPOSITIONS ARE PREPARED, SAID COMPOSITIONS AND RESINS BEING STABILIZED AGAINST DEGRADATION AND DISCOLORATION BY HAVING INCORPORATED THEREIN PHENOLIC ANTIOXIDANTS SUCH AS THE REACTION PRODUCT OF PHENOL AND DICYCLOPHENTADIENE, SAID REACTION PRODUCTS HAVING BEEN SUBSEQUENTLY ALKYLATED WITH AN OLEFIN SUCH AS ISOBUTYLENE.
Inventors
- 👤 N Bender
- 👤 R Spacht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:39
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08K; C08K5/00; C08K5/04; C08K5/13; C08J2375/00; C08J2375/04; C08J2375/08; C08J2465/00
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |