US2803620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of butyl rubber with dimethylol phenol product and triphenyl stibine
Assignee: Uniroyal Inc
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Filing: 1953-03-31
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Granted: 1957-08-20
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Expires: 1973-03-31
Abstract
No abstract record available.
Inventors
- 👤 George S Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:30
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
AN IMPROVED VULCANIZATE COMPRISING A RUBBERY COPOLYMER OF AN ISOMONOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10% OF A COMPOUND ALIPHATIC DIOLFIN HAVING FROM 4 TO 8 CARBON ATOMSS, VULCANIZED WITH A 2,6-DIMETHYLOL-4-HYDROCARBON PHENOL, AND CONTAINING TRIPHENYL STIBINE IN AMOUNT SUFFICIENT TO PROTECT SAID VULCANIZATE AGAINST OXIDATIVE AGING IN THE PRESENCE OF STEAM.
Claim 2
Dependent Claim
58 words
AN IMPROVED VULCANIZATE COMPRISING A RUBBERY COPOLYMER OF AN ISOMONOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10% OF A COMPOUND ALIPHATIC DIOLFIN HAVING FROM 4 TO 8 CARBON ATOMSS, VULCANIZED WITH A 2,6-DIMETHYLOL-4-HYDROCARBON PHENOL, AND CONTAINING TRIPHENYL STIBINE IN AMOUNT SUFFICIENT TO PROTECT SAID VULCANIZATE AGAINST OXIDATIVE AGING IN THE PRESENCE OF STEAM.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |