Patent US3039992A successfully refreshed from Google Patents.
US3039992A
Expired / Lapsed
US
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Alkaline earth sulfide in curing of fluorocarbon elastomer
Assignee: EIDP Inc
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Filing: 1960-05-17
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Granted: 1962-06-19
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Expires: 1980-05-17
Abstract
No abstract record available.
Inventors
- 👤 John F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:39
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; C08K5/00; C08K5/16; C08K5/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS OF CURING A FLUOROCARBON ELASTOMER SELECTED FROM THE GROUP CONSISTING OF A VINYLIDENE FLUORIDEHEXAFLUOROPROPENE COPOLYMER AND A VINYLIDENE FLUORIDEHEXAFLUOROPROPENE-TETRAFLUOROETHYLENE COPOLYMER, WHICH COMPRISES (1) INCORPORATING INTO EACH 100 PARTS BY WEIGHT OF SAID FLUOROCARBON ELASTOMER (A) A CURING AGENT SELECTED FROM THE GROUP CONSISTING OF ABOUT 0.5 TO 3.0 PARTS BY WEIGHT OF THE CARBAMATE OF A 2 TO 6 CARBON ATOM ALKYLENE DIAMINE; ABOUT 0.5 TO 3.0 PARTS BY WEIGHT OF AN N,N''DIARYLIDENE DIAMINE OF THE FORMULA
Claim 2
Dependent Claim
79 words
A PROCESS OF CURING A FLUOROCARBON ELASTOMER SELECTED FROM THE GROUP CONSISTING OF A VINYLIDENE FLUORIDEHEXAFLUOROPROPENE COPOLYMER AND A VINYLIDENE FLUORIDEHEXAFLUOROPROPENE-TETRAFLUOROETHYLENE COPOLYMER, WHICH COMPRISES (1) INCORPORATING INTO EACH 100 PARTS BY WEIGHT OF SAID FLUOROCARBON ELASTOMER (A) A CURING AGENT SELECTED FROM THE GROUP CONSISTING OF ABOUT 0.5 TO 3.0 PARTS BY WEIGHT OF THE CARBAMATE OF A 2 TO 6 CARBON ATOM ALKYLENE DIAMINE; ABOUT 0.5 TO 3.0 PARTS BY WEIGHT OF AN N,N''DIARYLIDENE DIAMINE OF THE FORMULA
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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |