Patent US2562547A successfully refreshed from Google Patents.
US2562547A
Expired / Lapsed
US
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Fluorinated compounds
Assignee: EIDP Inc
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Filing: 1944-12-11
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Granted: 1951-07-31
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Expires: 1964-12-11
Abstract
No abstract record available.
Inventors
- 👤 William E Hanford
- 👤 Jr Robert M Joyce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/69; C07C17/00; C07C17/26; C07C17/272; C07C17/275; C07C17/278; C07C17/32; C07C19/00; C07C19/08; C07C19/10; C07C22/00; C07C22/02; C07C22/04; C07C22/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS FOR OBTAINING ORGANIC FLUORINECONTAINING HALOCARBONS, WHICH COMPRISES HEATING TETRAFLUORIETHYLENE WITH CARBON TETRACHLORIDE AT A TEMPERATURE WITHIN THE RANGE OF FROM 100* C. TO 250* C., THE MOLE RATIO OF SAID CARBON TETRACHLORIDE TO SAID TETRAFLUOROETHYLENE BEING WITHIN THE RANGE OF FROM 1:1 TO 10:1, SAID HEATING BEING EFFECTED UNDER SUBSTANTIALLY ANHYDROUS CONDIDITIONS UNDER A PRESSURE WITHIN THE RANGE OF FROM ONE ATMOSPHERE TO 200 ATMOSPHERES IN THE PRESSENCE OF AN AMOUNT OF BENZOYL PEROXIDE WITHIN THE RANGE OF FROM 0.001% TO 10% OF THE COMBINED WEIGHT OF SAID TETRAFLUOROETHYLENE AND CARBON TETRACHLORIDE.
Claim 2
Dependent Claim
94 words
THE PROCESS FOR OBTAINING ORGANIC FLUORINECONTAINING HALOCARBONS, WHICH COMPRISES HEATING TETRAFLUORIETHYLENE WITH CARBON TETRACHLORIDE AT A TEMPERATURE WITHIN THE RANGE OF FROM 100* C. TO 250* C., THE MOLE RATIO OF SAID CARBON TETRACHLORIDE TO SAID TETRAFLUOROETHYLENE BEING WITHIN THE RANGE OF FROM 1:1 TO 10:1, SAID HEATING BEING EFFECTED UNDER SUBSTANTIALLY ANHYDROUS CONDIDITIONS UNDER A PRESSURE WITHIN THE RANGE OF FROM ONE ATMOSPHERE TO 200 ATMOSPHERES IN THE PRESSENCE OF AN AMOUNT OF BENZOYL PEROXIDE WITHIN THE RANGE OF FROM 0.001% TO 10% OF THE COMBINED WEIGHT OF SAID TETRAFLUOROETHYLENE AND CARBON TETRACHLORIDE.
References Cited (Backward Citations)
US2230654A
Cited
US2411159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |