Patent US2985632A successfully refreshed from Google Patents.
US2985632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gr-s cured with dicamyl peroxide and sulfur
Assignee: Hercules Powder Co
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Filing: 1956-12-04
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Granted: 1961-05-23
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Expires: 1976-12-04
Abstract
No abstract record available.
Inventors
- 👤 William D Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A VULCANIZABLE RUBBER COMPOSITION COMPRISING A SYNTHETIC RUBBERY COPOLYMER OF BUTADIENE AND STYRENE, SULFUR IN AN AMOUNT FROM ABOUT 0.05 TO ABOUT 3% BY WEIGHT OF THE RUBBER COPOLYMER AND BIS-(A,A-DIMETHYLBENZYL) PEROXIDE IN AN AMOUNT FROM ABOUT 0.01 TO ABOUT 10% BY WEIGHT OF THE RUBBERY COPOLYMER.
Claim 2
Dependent Claim
47 words
A VULCANIZABLE RUBBER COMPOSITION COMPRISING A SYNTHETIC RUBBERY COPOLYMER OF BUTADIENE AND STYRENE, SULFUR IN AN AMOUNT FROM ABOUT 0.05 TO ABOUT 3% BY WEIGHT OF THE RUBBER COPOLYMER AND BIS-(A,A-DIMETHYLBENZYL) PEROXIDE IN AN AMOUNT FROM ABOUT 0.01 TO ABOUT 10% BY WEIGHT OF THE RUBBERY COPOLYMER.
References Cited (Backward Citations)
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Cited
US2426476A
Cited
US2668180A
Cited
US2691683A
Cited
US2717914A
Cited
US2819256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |