US2764506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for impregnating fibrous material derived from a tetrafluoroethylene polymerand product
Assignee: EIDP Inc
•
Filing: 1954-09-24
•
Granted: 1956-09-25
•
Expires: 1974-09-24
Abstract
No abstract record available.
Inventors
- 👤 Piccard John Augustus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:51
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/244; D06M15/256; C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; C08L2205/00; C08L2205/02; C08L2205/14; C08L2205/18; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2475; Y10T442/273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR THE PREPARATION OF SEALING MATERIALS WHICH COMPRISES IMPREGNATING FIBROUS MATERIAL DERIVED FROM A TETRAFLUOROETHYLENE POLYMER DERIVED FROM AT LEAST ABOUT 85% BY WEIGHT OF TETRAFLUOROETHYLENE WITH A DISPERSION OF A TETRAFLUOROETHYLENE POLYMER DERIVED FROM AT LEAST ABOUT 85% BY WEIGHT OF TETRAFLUOROETHYLENE AND BREAKING THE DISPERSION TO FORM A COAGULUM OF SAID POLYMER FROM THE SAID DISPERSION, IN CLOSE RELATIONSHIP TO THE FIBERS IN SAID FIBROUS MATERIAL, FORMING THEREBY SAID SEALING MATERIALS.
Claim 2
Dependent Claim
75 words
A PROCESS FOR THE PREPARATION OF SEALING MATERIALS WHICH COMPRISES IMPREGNATING FIBROUS MATERIAL DERIVED FROM A TETRAFLUOROETHYLENE POLYMER DERIVED FROM AT LEAST ABOUT 85% BY WEIGHT OF TETRAFLUOROETHYLENE WITH A DISPERSION OF A TETRAFLUOROETHYLENE POLYMER DERIVED FROM AT LEAST ABOUT 85% BY WEIGHT OF TETRAFLUOROETHYLENE AND BREAKING THE DISPERSION TO FORM A COAGULUM OF SAID POLYMER FROM THE SAID DISPERSION, IN CLOSE RELATIONSHIP TO THE FIBERS IN SAID FIBROUS MATERIAL, FORMING THEREBY SAID SEALING MATERIALS.
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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |