US2674631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated fluorine compounds
Assignee: Honeywell International Inc
•
Filing: 1951-08-03
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Granted: 1954-04-06
•
Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Charles B Miller
- 👤 John D Calfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:34
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE PROCESS FOR FORMING CCL2=CF2 FROM THE DIMER OF CCL2=CF2 WHICH COMPRISES CONTACTING GASEOUS MATERIAL COMPRISING SAID DIMER WITH ALUMINUM FLOURIDE CATALYST AT TEMPERATURE IN THE APPROXIMATE RANGE 550-750* C. FOR TIME SUFFICIENT TO DECOMPOSE A SUBSTANTIAL AMOUNT OF SAID DIMER TO FORM A SUBSTANTIAL AMOUNT OF CCL2=CF2.
Claim 2
Dependent Claim
48 words
THE PROCESS FOR FORMING CCL2=CF2 FROM THE DIMER OF CCL2=CF2 WHICH COMPRISES CONTACTING GASEOUS MATERIAL COMPRISING SAID DIMER WITH ALUMINUM FLOURIDE CATALYST AT TEMPERATURE IN THE APPROXIMATE RANGE 550-750* C. FOR TIME SUFFICIENT TO DECOMPOSE A SUBSTANTIAL AMOUNT OF SAID DIMER TO FORM A SUBSTANTIAL AMOUNT OF CCL2=CF2.
References Cited (Backward Citations)
US2406153A
Cited
US2543530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |