Patent US2939861A successfully refreshed from Google Patents.
US2939861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber vulcanizates and process of preparing same
Assignee: Bridgestone Firestone Inc
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Filing: 1957-08-23
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Granted: 1960-06-07
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Expires: 1977-08-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Ambelang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE PROCESS OF PRODUCING A VULCANIZATE WHICH COMPRISES SULFUR-VULCANIZING A SULFUR-VULCANIZABLE HYUDROCARBONDIENE RUBBER IN THE PRESENCE OF A SMALL AMOUNT OF AN ANTIOZOME AGENT WHICH IS FROM THE CLASS CONSISTING OF COMPOUNDS HAVING THE FORMULAE.
Claim 2
Dependent Claim
35 words
THE PROCESS OF PRODUCING A VULCANIZATE WHICH COMPRISES SULFUR-VULCANIZING A SULFUR-VULCANIZABLE HYUDROCARBONDIENE RUBBER IN THE PRESENCE OF A SMALL AMOUNT OF AN ANTIOZOME AGENT WHICH IS FROM THE CLASS CONSISTING OF COMPOUNDS HAVING THE FORMULAE.
References Cited (Backward Citations)
US1965463A
Cited
US2261002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |