US2773781A
Expired / Lapsed
US
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Coated article and method of making
Assignee: EIDP Inc
•
Filing: 1954-09-24
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Granted: 1956-12-11
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Expires: 1974-09-24
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Rodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:28
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/587; Y; Y10; Y10S; Y10S138/00; Y10S138/03; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T442/00; Y10T442/20; Y10T442/2549; Y10T442/2631
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A FIBROUS STRUCTURE OF POLYTETRAFLUOROETHYLENE FILAMENTS IMPREGNATED WITH A COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE FUSED INTO A MATRIX.
Claim 2
Dependent Claim
18 words
A FIBROUS STRUCTURE OF POLYTETRAFLUOROETHYLENE FILAMENTS IMPREGNATED WITH A COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE FUSED INTO A MATRIX.
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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |