US2943080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of tetrafluoroethylene and fluorinated olefins
Assignee: EIDP Inc
•
Filing: 1956-12-11
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Granted: 1960-06-28
•
Expires: 1976-12-11
Abstract
No abstract record available.
Inventors
- 👤 Bro Manville Isager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:29
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A NORMALLY SOLID COPOLYMER OF TETRAFLUOROETHYLENE AND A FLUORINATED OLEFIN, SAID COPOLYMER CONTAINING 99.9% TO 95% OF TETRAFLUOROETHYLENE AND COMPLEMENTARY THEREWITH 0.1 TO 5% BY WEIGHT OF THE SAID COPOLYMER OF A FLUORINATED OLEFIN HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
38 words
A NORMALLY SOLID COPOLYMER OF TETRAFLUOROETHYLENE AND A FLUORINATED OLEFIN, SAID COPOLYMER CONTAINING 99.9% TO 95% OF TETRAFLUOROETHYLENE AND COMPLEMENTARY THEREWITH 0.1 TO 5% BY WEIGHT OF THE SAID COPOLYMER OF A FLUORINATED OLEFIN HAVING THE GENERAL 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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |