Patent US2731068A successfully refreshed from Google Patents.
US2731068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrafluoroethylene polymer bonded heat-resistant fabric
Assignee: EIDP Inc
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Filing: 1950-09-23
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Granted: 1956-01-17
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Richards Kurt Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/504; C; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C04B26/08; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2309/00; B29K2309/08; B29K2309/12; Y; Y10; Y10S; Y10S138/00; Y10S138/02; Y10S138/03; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31551; Y10T428/31645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A CONTINUOUS PROCESS OF PRODUCING A UNITARY STRUCTURE WHICH COMPRISES ARRANGING IN SUPERPOSED RELATION A PLURALITY OF CONTINUOUS PILES OF WOVEN FABRIC WHICH HAVE PREVIOUSLY BEEN IMPREGNATED WITH A POLYMERIC MATERIAL COMPRISING TETRAFLUOROETHYLENE UNITS IN PREPONDERANT AMOUNT AND DRIED, LIGHTLY PRESSING SUCCESSIVE PORTIONS OF THE ASSEMBLED PILES TO FORM A COHERENT STRUCTURE, AND SUBSEQUENTLY HEATING SUCCESSIVE PORTIONS OF THE COHERENT STRUCTURE AT A TEMPERATURE ABOVE THE FUSION POINT OF THE POLYMERIC MATERIAL IN THE ABSENCE OF ANY APPLIED PRESSURE TO WELD ALL OF THE POLYMERIC MATERIAL TOGETHER INTO A CONTINUOUS LENGTH OF LAMINATED MATERIAL, THE FABRIC BEING ONE WHICH WILL NOT DECOMPOSE UNDER THE CONDITIONS RECITED.
Claim 2
Dependent Claim
106 words
A CONTINUOUS PROCESS OF PRODUCING A UNITARY STRUCTURE WHICH COMPRISES ARRANGING IN SUPERPOSED RELATION A PLURALITY OF CONTINUOUS PILES OF WOVEN FABRIC WHICH HAVE PREVIOUSLY BEEN IMPREGNATED WITH A POLYMERIC MATERIAL COMPRISING TETRAFLUOROETHYLENE UNITS IN PREPONDERANT AMOUNT AND DRIED, LIGHTLY PRESSING SUCCESSIVE PORTIONS OF THE ASSEMBLED PILES TO FORM A COHERENT STRUCTURE, AND SUBSEQUENTLY HEATING SUCCESSIVE PORTIONS OF THE COHERENT STRUCTURE AT A TEMPERATURE ABOVE THE FUSION POINT OF THE POLYMERIC MATERIAL IN THE ABSENCE OF ANY APPLIED PRESSURE TO WELD ALL OF THE POLYMERIC MATERIAL TOGETHER INTO A CONTINUOUS LENGTH OF LAMINATED MATERIAL, THE FABRIC BEING ONE WHICH WILL NOT DECOMPOSE UNDER THE CONDITIONS RECITED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |