Patent US2589551A successfully refreshed from Google Patents.
US2599640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of chlorotrifluoroethylene, an olefinic hydrocarbon and a vinyl carboxylate
Assignee: EIDP Inc
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Filing: 1944-08-04
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Granted: 1952-06-10
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Expires: 1964-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert M Joyce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:58
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/24; C08F214/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A COPOLYMER OF CHLOROTRIFLUOROETHYLENE, VINYL ACETATE AND ETHYLENE IN WHICH THE CHLOROTRIFLUOROETHYLENE: VINYL ACETATE: ETHYLENE MOLE RATIO IS 1:5:1:18.
Claim 2
Dependent Claim
19 words
A COPOLYMER OF CHLOROTRIFLUOROETHYLENE, VINYL ACETATE AND ETHYLENE IN WHICH THE CHLOROTRIFLUOROETHYLENE: VINYL ACETATE: ETHYLENE MOLE RATIO IS 1:5:1:18.
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) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |