US2646422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cured chlorosulfonated interpolymers of the diolefins
Assignee: EIDP Inc
•
Filing: 1951-03-16
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Granted: 1953-07-21
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Expires: 1971-03-16
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Strain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:20
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/02; C08C19/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A SYNTHETIC ELASTOMER COMPRISING A HYDROGENATED AND CHLOROSULFONATED POLYMER OF THE GROUP CONSISTING OF CONJUGATED DIOLEFIN POLYMERS AND HALOGENATED PRODUCTS THEREOF, THE ORDER OF PROCESSES USED IN PRODUCING THE ELASTOMER BEING HYDROGENATION FOLLOWED BY CHLOROSULFONATION, THE CHLOROSULFONATION REACTION BEING CONDUCTED UNTIL THE PRODUCT CONTAINS ON A WEIGHT BASIS 20 TO 45% CHLORINE AND 0.25 TO 3.0% SULFUR.
Claim 2
Dependent Claim
57 words
A SYNTHETIC ELASTOMER COMPRISING A HYDROGENATED AND CHLOROSULFONATED POLYMER OF THE GROUP CONSISTING OF CONJUGATED DIOLEFIN POLYMERS AND HALOGENATED PRODUCTS THEREOF, THE ORDER OF PROCESSES USED IN PRODUCING THE ELASTOMER BEING HYDROGENATION FOLLOWED BY CHLOROSULFONATION, THE CHLOROSULFONATION REACTION BEING CONDUCTED UNTIL THE PRODUCT CONTAINS ON A WEIGHT BASIS 20 TO 45% CHLORINE AND 0.25 TO 3.0% SULFUR.
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) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |