Patent US2958683A successfully refreshed from Google Patents.
US2958683A
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US
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Copolymers of octafluorocyclohexa-1, 3-diene
Assignee: National Smelting Co Ltd
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Filing: 1958-09-15
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Granted: 1960-11-01
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Expires: 1978-09-15
Abstract
No abstract record available.
Inventors
- 👤 Hopkin William
- 👤 Barbour Anthony Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:36
CPC Classifications
C; C08; C08F; C08F232/00; C08F232/02; C08F232/06; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A COPOLYMER OF OCTAFLUOROCYCLOHEXA-1:3-DIENE WITH AT LEAST A MOLECULARLY EQUIVALENT PROPORTION OF A HYDROGEN-CONTAINING POLYMERIZABLE MONOMER CONTAINING OLEFINIC UNSATURATION.
Claim 2
Dependent Claim
19 words
A COPOLYMER OF OCTAFLUOROCYCLOHEXA-1:3-DIENE WITH AT LEAST A MOLECULARLY EQUIVALENT PROPORTION OF A HYDROGEN-CONTAINING POLYMERIZABLE MONOMER CONTAINING OLEFINIC UNSATURATION.
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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |