US2830970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of butyl rubber by 2,6-di(acyloxymethyl)-4-hydrocarbyl phenols
Assignee: Uniroyal Inc
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Filing: 1955-09-27
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Granted: 1958-04-15
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Expires: 1975-09-27
Abstract
No abstract record available.
Inventors
- 👤 Pliny O Tawney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A METHOD OF VULCANIZING A SYNTHETIC RUBBERY COPOLYMER OF AN ISOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10% OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS, COMPRISING HEATING 100 PARTS BY WEIGHT OF THE SAID RUBBER AT A TEMPERATURE OF FROM 100*C. TO 205*C. FOR FROM 5 MINUTES TO 3 HOURS, IN ADMIXTURE WITH FROM 1 TO 12 PARTS OF A PHENOLIC COMPOUND OF THE FORMULA
Claim 2
Independent Claim
74 words
A METHOD OF VULCANIZING A SYNTHETIC RUBBERY COPOLYMER OF AN ISOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10% OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS, COMPRISING HEATING 100 PARTS BY WEIGHT OF THE SAID RUBBER AT A TEMPERATURE OF FROM 100*C. TO 205*C. FOR FROM 5 MINUTES TO 3 HOURS, IN ADMIXTURE WITH FROM 1 TO 12 PARTS OF A PHENOLIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2726224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |