Patent US3061586A successfully refreshed from Google Patents.
US3061586A
Expired / Lapsed
US
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Stabilization of rubber
Assignee: Universal Oil Products Co
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Filing: 1959-12-30
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Granted: 1962-10-30
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/5398; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A RUBBER NORMALLY SSUBJECT TO CRACKING DUE TO OZONE CONTAINING FROM ABOUT 0.25% TO ABOUT 10% BY WEIGHT OF AN INHIBITOR HAVING THE FOLLOWING GENERAL STRUCTURE: WHERE R1, R2, R3, R4, R5 AND R6 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYL GROUPS AND X IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |