US3121121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoropinacol and synthesis thereof
Assignee: EIDP Inc
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Filing: 1961-10-30
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Granted: 1964-02-11
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Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 Richard V Lindsey
- 👤 William J Middieton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:06
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/34; C07C31/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
THE PROCESS OF PREPARING PERFLUOROPINACOL WHICH COMPRISES REDUCING HEXAFLUOROACETONE IN THE PRESENCE OF A MONOHYDRIC ALCOHOL CONSISTING SOLELY OF CARBON AND HYDROGEN EXCEPT FOR THE HYDOXYL AND HAVING HYDROGEN ON THE CARBINOL CARBON UNDER THE INFLUENECE OF LIGHT ENERGY IN THE WAVELENGTH RANGE OF ABOUT 1000-7000 A. AND UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |