Patent US3293306A successfully refreshed from Google Patents.
US3293306A
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US
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Perfluorinated ether alcohols
Assignee: EIDP Inc
•
Filing: 1963-06-14
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Granted: 1966-12-20
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Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Bleu Ronald Eugene Le
- 👤 Fassnacht John Hartwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:40
CPC Classifications
C; C14; C14C; C14C9/00; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/137; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/141; C07F9/1411
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA528136A
Cited
US2965678A
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US2713593A
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US2723999A
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US2839513A
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US3094547A
Cited
US3083224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |