US2879262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber vulcanization with substituted tetramethylene thiurams and dithiocarbamates
Assignee: Wyeth Holdings LLC
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Filing: 1956-01-09
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Granted: 1959-03-24
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Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 Frank A V Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A METHOD OF VULCANIZING AN UNVULCANIZED ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBER-LIKE BUTADIENE-1,3 POLYMERS WHICH COMPRISES INCORPORATING IN SAID ELASTOMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF N,N''-2-METHYLTETRAMETHYLENE THIURAM DISULFIDE, N,N''-2,5-DIMETHYLTETRAMETHYLENE THIURAM DISULFIDE AND THE ZINC SALTS THEREOF AND SUBJECTING THE RESULTANT MIXTURE TO HEAT FOR SUFFICIENT TIME TO ESTABLISH THE CURE.
Claim 2
Independent Claim
60 words
A METHOD OF VULCANIZING AN UNVULCANIZED ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBER-LIKE BUTADIENE-1,3 POLYMERS WHICH COMPRISES INCORPORATING IN SAID ELASTOMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF N,N''-2-METHYLTETRAMETHYLENE THIURAM DISULFIDE, N,N''-2,5-DIMETHYLTETRAMETHYLENE THIURAM DISULFIDE AND THE ZINC SALTS THEREOF AND SUBJECTING THE RESULTANT MIXTURE TO HEAT FOR SUFFICIENT TIME TO ESTABLISH THE CURE.
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |