Patent US3038870A successfully refreshed from Google Patents.
US3038870A
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US
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Process of preparing and extruding an aqueous gel of polytetrafluoroethylene
Assignee: EIDP Inc
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Filing: 1956-12-27
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Granted: 1962-06-12
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Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Schott Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/44; D01F6/48; B; B29; B29C; B29C48/00; B29C48/022; B29C48/03; B29C48/05; B29C48/07; B29C48/08; C; C08; C08K; C08K3/00; C08K3/38; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; B29K; B29K2027/00; B29K2027/12; B29K2027/18; C08L29/00; C08L29/02; C08L29/04
Claims Analysis
Total Claims: 0
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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) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |