US2670388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of unsaturated fluorochlorocarbon
Assignee: Honeywell International Inc
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Filing: 1951-08-03
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Granted: 1954-02-23
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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
2026-10-30 12:53
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE PROCESS FOR FLUORINATING CCL2=CCL2 WHICH COMPRISES CONTACTING SAID CCL2=CCL2 IN THE PRESENCE OF SUFFICIENT GASEOUS HF TO FORM CCL2=CCLF AND AT FLUORINATION TEMPERATURE IN THE APPROXIMATE RANGE 500-750* C. WITH ALUMINUM FLUORIDE CATALYST, FOR TIME SUFFICIENT TO FLUORINATE AN APPRECIABLE AMOUNT OF SAID CCL2=CCL2 TO FORM CCL2=CCLF.
Claim 2
Dependent Claim
48 words
THE PROCESS FOR FLUORINATING CCL2=CCL2 WHICH COMPRISES CONTACTING SAID CCL2=CCL2 IN THE PRESENCE OF SUFFICIENT GASEOUS HF TO FORM CCL2=CCLF AND AT FLUORINATION TEMPERATURE IN THE APPROXIMATE RANGE 500-750* C. WITH ALUMINUM FLUORIDE CATALYST, FOR TIME SUFFICIENT TO FLUORINATE AN APPRECIABLE AMOUNT OF SAID CCL2=CCL2 TO FORM CCL2=CCLF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |