Patent US2951047A successfully refreshed from Google Patents.
US2951047A
Expired / Lapsed
US
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Preparation of filaments from polytetrafluoroethylene emulsions
Assignee: EIDP Inc
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Filing: 1956-12-24
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Granted: 1960-08-30
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Lantos Peter Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/12; C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA486628A
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CA511376A
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GB588697A
Cited
US2530362A
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US2671065A
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US2718452A
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US2668157A
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US2681324A
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US2737436A
Cited
US2766214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |