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US2709189A
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Preparation of fluorine-containing compounds by reacting carbon with carbonyl fluoride
Assignee: EIDP Inc
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Filing: 1954-04-01
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Granted: 1955-05-24
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Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 Mark W Farlow
- 👤 Eari L Muetterties
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:18
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/093; C07C17/18; C07C17/2637; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; H01B3/445; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
A PROCESS FOR THE PRODUCTION OF TETRAFLUOROETHYLENE WHICH COMPRISES HEATING CARBON WITH A COMPOUND OF THE FORMULA F2C=X, X BEING A CHALCOGGEN OF ATOMIC NUMBER LESS THAN 17, AT A TEMPERATURE OF AT LEAST 1500* C., WHEREBY TETRAFLUOROETHYLENE IS FORMED BY REACTION BETWEEN SAID CARBON AND SAID COMPOUND OF THE FORMULA F2C=X, AND THEREAFTER SEPARATING TETRAFLUOROETHYLENE FROM THE RESULTING MIXTURE.
References Cited (Backward Citations)
US2551573A
Cited
GB619394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |