Patent US2600683A successfully refreshed from Google Patents.
US2600683A
Expired / Lapsed
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Trifluorochloroethylene-vinyl acetate copolymers
Assignee: Akzo Nobel UK PLC
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Filing: 1947-05-08
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Granted: 1952-06-17
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Expires: 1967-05-08
Abstract
No abstract record available.
Inventors
- 👤 Frank G Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:33
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/24; C08F214/245
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A MATERIAL COMPRISING A COPOLYMER WHOSE MONOMERIC CONSTITUENTS COMPRISES TRIFLUOROCHLOROETHYLENE AND AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE AND VINYL ALCOHOL, THE COPOLYMER CONTAINING FROM 5 TO 80 MOL PERCENT OF VINYL ACETATE WHEN NO VINYL ALCOHOL GROUPS ARE PRESENT AND, WHEN VINYL ALCOHOL GROUPS ARE PRESENT, BEING DERIVED BY HYDROLYZING FROM A COPOLYMER CONTAINING FROM 5 TO 80 OF TRIFLUOROCHLOROETHYLENE.
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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |