US3390203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysilicic acid/hydroxyalkyl vinyl ether-tetrafluoroethylene of chlorotrifluoroethylene compolymers containing selected sodium and potassium salts
Assignee: EIDP Inc
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Filing: 1966-09-29
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Granted: 1968-06-25
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Engelhardt Eugene Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:33
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D129/00; C09D129/10; C08; C08L; C08L83/00; C08L83/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 0
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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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |