Patent US3681316A successfully refreshed from Google Patents.
US3681316A
Expired / Lapsed
US
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T-butyl carbocyclic substituted cumene peroxides as curing agents
Assignee: Hercules LLC
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Filing: 1971-02-22
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Granted: 1972-08-01
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Expires: 1991-02-22
Abstract
Abstract ARE PEROXIDES WHICH CURE POLYETHYLENE AND OTHER POLYMERS AND HAVE ODOR-FREE, NON-BLOOMING AND NON-SCORCHING PROPERTIES. 1-CH3-CYCLOHEX-1-YL C6H5-C(-CH3)2-, 1-CH3-CYCLOHEX-1-YL, OR 4-((CH3)2-C-), WHERE R HAS THE FORMULA ((CH3)3-C-O-O-C(-CH3)2-),R-BENZENE PEROXIDES OF THE FORMULA
Inventors
- 👤 Frederick G Schappell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |