US3706742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrahydroquinoxaline/aldehyde reaction products as antioxonants
Assignee: Goodyear Tire and Rubber Co
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Filing: 1970-08-17
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Granted: 1972-12-19
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Expires: 1990-08-17
Abstract
Abstract POLYMERS PROTECTED AGAINST OZONE DEGRADATION BY THE INCORPORATION OF A REACTION PRODUCT PRODUCED BY REACTING A TETRAHYDROQUINOXALINE (1,2,3,4-TETRAHYDROQUINOXALINE) WITH AN ALDEHYDE (FORMALDEHYDE).
Inventors
- 👤 Farris H Wilson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3462; C08K5/3465; C08K5/3412; C08K5/3432; C08K5/3435
Claims Analysis
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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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |