Patent US3595925A successfully refreshed from Google Patents.
US3595925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorination of omega-hydro-fluorinated polyethers
Assignee: EIDP Inc
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Filing: 1969-01-30
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Granted: 1971-07-27
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Expires: 1989-01-30
Abstract
Abstract PROCESS FOR THE LIQUID PHASE FLUORINATION OF HYDRO-ENDCAPPED POLYFLUORINATED POLYETHERS WHICH COMPRISES REACTING THE POLYETHERS WITH ANTIMONY PENTAFLUORIDE.
Inventors
- 👤 Bruce H Garth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:07
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/12; C07C43/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |