US2909504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber antioxidants
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1957-03-26
•
Granted: 1959-10-20
•
Expires: 1977-03-26
Abstract
No abstract record available.
Inventors
- 👤 Ronald B Spacht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
AN OXIDIZABLE RUBBERT POLYMER OF A CONJUGATED DIOLEFIN CONTANING FROM 0.5 TO 5.0% BY WEIGHT OF A PHENOLIC ANTIOXIDANT HAVING THE FOLLOWING STRUCTURAL FORMULA
Claim 2
Dependent Claim
24 words
AN OXIDIZABLE RUBBERT POLYMER OF A CONJUGATED DIOLEFIN CONTANING FROM 0.5 TO 5.0% BY WEIGHT OF A PHENOLIC ANTIOXIDANT HAVING THE FOLLOWING STRUCTURAL FORMULA
References Cited (Backward Citations)
US2248831A
Cited
US2471887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |