Patent US3205195A successfully refreshed from Google Patents.
US3205195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imidazolidine thione stabilizers for synthetic rubbers
Assignee: Bridgestone Firestone Inc
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Filing: 1962-01-02
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Granted: 1965-09-07
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Wendell S Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A SYNTHETIC RUBBER OF THE CLASS CONSISTING OF POLYMERS OF HYDROGEN DIENE MONOMERS OF 4 AND 5 CARBON ATOMS AND COPOLYMERS THEREOF WITH STYRENE, SUBSTITUTED STYRENES, ACRYLONITRILE, LOWER ALKYL ACRYLATES AND METHACRYLATES, AND VULCANIZATES THEREOF, WHICH RUBBER IS STABILIZED WITH A STABILIZING AMOUNT OF AN IMIDAZOLIDINE THIONE OF THE FORMULA
Claim 2
Dependent Claim
50 words
A SYNTHETIC RUBBER OF THE CLASS CONSISTING OF POLYMERS OF HYDROGEN DIENE MONOMERS OF 4 AND 5 CARBON ATOMS AND COPOLYMERS THEREOF WITH STYRENE, SUBSTITUTED STYRENES, ACRYLONITRILE, LOWER ALKYL ACRYLATES AND METHACRYLATES, AND VULCANIZATES THEREOF, WHICH RUBBER IS STABILIZED WITH A STABILIZING AMOUNT OF AN IMIDAZOLIDINE THIONE OF THE FORMULA
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |