US2748104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing of polyisobutylene
Assignee: Uniroyal Inc
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Filing: 1952-10-08
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Granted: 1956-05-29
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Expires: 1972-10-08
Abstract
No abstract record available.
Inventors
- 👤 Viohl Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; C08K3/00; C08K3/02; C08K3/06; C08K5/16; C08K5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A METHOD OF CURING ELASTOMERIC POLYISOBUTYLENE WHICH COMPRISES HEATING THE ELASTOMER IN THE PRESENCE OF AT LEAST ABOUT ONE-HALF PERCENT BY WEIGHT OF SULFUR, FROM ABOUT TWO TO SEVEN PERCENT BY WEIGHT OF TERTIARY-BUTYL PEROXIDE, AND AT LEAST ABOUT 0.5 PERCENT BY WEIGHT OF A CHEMICAL FROM THE GROUP CONSISTING OF QUINONE DIOXIME, P-DINITROSOBENZENE, AND POLY-P-DINITROSOBENZENE, BASED ON THE WEIGHT OF THE UNCURED POLYISOBUTYLENE.
Claim 2
Independent Claim
64 words
A METHOD OF CURING ELASTOMERIC POLYISOBUTYLENE WHICH COMPRISES HEATING THE ELASTOMER IN THE PRESENCE OF AT LEAST ABOUT ONE-HALF PERCENT BY WEIGHT OF SULFUR, FROM ABOUT TWO TO SEVEN PERCENT BY WEIGHT OF TERTIARY-BUTYL PEROXIDE, AND AT LEAST ABOUT 0.5 PERCENT BY WEIGHT OF A CHEMICAL FROM THE GROUP CONSISTING OF QUINONE DIOXIME, P-DINITROSOBENZENE, AND POLY-P-DINITROSOBENZENE, BASED ON THE WEIGHT OF THE UNCURED POLYISOBUTYLENE.
References Cited (Backward Citations)
US2391742A
Cited
US2620323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |