US2951832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroelastomers
Assignee: EIDP Inc
•
Filing: 1958-09-26
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Granted: 1960-09-06
•
Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 Albert L Moran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A PROCESS FOR CURING A VINYLIDENE FLUORIDEHEXAFLUOROPROPYLENE COPOLYMER ELASTOMER CONTAINING FROM 30% TO 70% BY WEIGHT OF HEXAFLUOROPROPYLENE UNITS AND CONTAINING FROM 5% TO 25%, BASED ON THE WEIGHT OF THE ELASTOMER, OF AN ACID ACCEPTOR, THE STEP WHICH COMPRISES INCORPORATING INTO THE UNCURED ELASTOMER FROM 1.0% TO 6.0%, BASED ON THE WEIGHT OF THE ELASTOMER, OF AN N,N''DIARYLIDENELIPHATICDIAMINE OF THE FORMULA:
Claim 2
Dependent Claim
63 words
IN A PROCESS FOR CURING A VINYLIDENE FLUORIDEHEXAFLUOROPROPYLENE COPOLYMER ELASTOMER CONTAINING FROM 30% TO 70% BY WEIGHT OF HEXAFLUOROPROPYLENE UNITS AND CONTAINING FROM 5% TO 25%, BASED ON THE WEIGHT OF THE ELASTOMER, OF AN ACID ACCEPTOR, THE STEP WHICH COMPRISES INCORPORATING INTO THE UNCURED ELASTOMER FROM 1.0% TO 6.0%, BASED ON THE WEIGHT OF THE ELASTOMER, OF AN N,N''DIARYLIDENELIPHATICDIAMINE OF THE FORMULA:
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |