US2988537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art and composition
Assignee: EIDP Inc
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Filing: 1958-10-21
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Granted: 1961-06-13
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Expires: 1978-10-21
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:18
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/51; C07C45/511; C07C45/515; C07C45/52; C07C47/00; C07C47/02; C07C47/198; C07C49/00; C07C49/04; C07C49/175; C08; C08G; C08G2/00; C08G2/14; C08G2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE PROCESS WHICH COMPRISES SEQUENTIALLY (1) CONTACTING, AT A TEMPERATURE OF ABOUT 15-80*C., A FLUOROOLEFIN OF THE FORMULA CX2=CX2, WHEREIN X IS HALOGEN OF ATOMIC NUMBER 9 TO 35, AT LEAST TWO X''S BEING FLUORINE, WITH A LIQUID REACTION MIXTURE OF AN ALKALI METAL ALKOXIDE CONTAINING UP TO 18 CARBON ATOMS AND A MEMBER OF THE GROUP CONSISTING OF CARBOXYLIC ACID ESTERS OF SATURATED ALCOHOLS AND FLUOROALCOHOLS CONTAINING UP TO 18 CARBON ATOMS AND CARBOXYLIC ACIDS CONTAINING UP TO 12 CARBON ATOMS AND N,N-DIALKYL CARBOXAMIDES, (2) ACIDIFYING SAID LIQUID REACTION MIXTURE, AND (3) SEPARATING FROM THE REACTION MIXTURE A MEMBER OF THE GROUP CONSISTING OF B-ALKOXYPOLYFLUOROCARBOXYLIC ACID ESTERS, B-ALKOXYPOLYFLUOROALDEHYDES AND B-ALKOXYPOLYFLUOROKETONES.
Claim 2
Dependent Claim
111 words
THE PROCESS WHICH COMPRISES SEQUENTIALLY (1) CONTACTING, AT A TEMPERATURE OF ABOUT 15-80*C., A FLUOROOLEFIN OF THE FORMULA CX2=CX2, WHEREIN X IS HALOGEN OF ATOMIC NUMBER 9 TO 35, AT LEAST TWO X''S BEING FLUORINE, WITH A LIQUID REACTION MIXTURE OF AN ALKALI METAL ALKOXIDE CONTAINING UP TO 18 CARBON ATOMS AND A MEMBER OF THE GROUP CONSISTING OF CARBOXYLIC ACID ESTERS OF SATURATED ALCOHOLS AND FLUOROALCOHOLS CONTAINING UP TO 18 CARBON ATOMS AND CARBOXYLIC ACIDS CONTAINING UP TO 12 CARBON ATOMS AND N,N-DIALKYL CARBOXAMIDES, (2) ACIDIFYING SAID LIQUID REACTION MIXTURE, AND (3) SEPARATING FROM THE REACTION MIXTURE A MEMBER OF THE GROUP CONSISTING OF B-ALKOXYPOLYFLUOROCARBOXYLIC ACID ESTERS, B-ALKOXYPOLYFLUOROALDEHYDES AND B-ALKOXYPOLYFLUOROKETONES.
References Cited (Backward Citations)
US2411158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |