Patent US3419628A successfully refreshed from Google Patents.
US3419628A
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Process for preparing fluorocarbon monomers
Assignee: United States Department of the Navy
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Filing: 1964-03-30
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Granted: 1968-12-31
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Martin H Kaufman
- 👤 John D Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:20
CPC Classifications
C; C07; C07C; C07C17/00; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C07C17/35; C07C21/00; C07C21/02; C07C21/18; Y; Y10; Y10S; Y10S149/00; Y10S149/12; Y10S149/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE METHOD OF PREPARING FLUORINE MONOMERS WHICH COMPRISES: REFLUXING THE ALCOHOLIC INTERMEDIATE, PREPARED BY HYDROLYSIS OF THE PRODUCT FORMED BY THE REACTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF DICHLOROTETRAFLUOROACETONE, MONOCHLOROPENTAFLUORACETONE AND HEXAFLUOROACETONE WITH A GRIGNARD REAGENT, AND PHOSPHORUS PENTACHLORIDE AT A TEMPERATURE OF ABOUT 100*C. FOR ABOUT FIVE DAYS.
Claim 2
Independent Claim
52 words
THE METHOD OF PREPARING FLUORINE MONOMERS WHICH COMPRISES: REFLUXING THE ALCOHOLIC INTERMEDIATE, PREPARED BY HYDROLYSIS OF THE PRODUCT FORMED BY THE REACTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF DICHLOROTETRAFLUOROACETONE, MONOCHLOROPENTAFLUORACETONE AND HEXAFLUOROACETONE WITH A GRIGNARD REAGENT, AND PHOSPHORUS PENTACHLORIDE AT A TEMPERATURE OF ABOUT 100*C. FOR ABOUT FIVE DAYS.
References Cited (Backward Citations)
US2852573A
Cited
US2980738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |