US2714618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of chlorofluorocarbons
Assignee: Honeywell International Inc
•
Filing: 1954-06-21
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Granted: 1955-08-02
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Woolf Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:05
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE PROCESS OF FLUORINATING CCL2=CCL2 TO FORM CCL2FCCL2F WHICH COMPRISES INTRODUCING A GAS PHASE MIXTURE COMPRISING CCL2=CCL2, SUBSTANTIALLY ANHYDROUS HF AND FREE CHLORINE INTO A REACTION ZONE, THE AMOUNT OF HF AND FREE CHLORINE BEING SUFFICIENT TO UNTIMATELY FROM A SUBSTANTIAL QUANTITY OF CCL2CCL2F, AND HEATING SAID MIXTURE IN SAID ZONE AT TEMPERATURE IN THE APPROXIMATE RANGE OF 300-600* C., WHILE IN THE PRESENCE OF ZIRCONIUM TETRAFLUORINATING-ACTIVATED CARBON CATALYST, FOR A TIME SUFFICIENT TO CAUSE FLUORINATING REACTION OF A SUBSTANTIAL QUANTITY OF CCL2=CCL2 AND EFFECT FORMATION OF A GASEOUS CHLOROFLUOROCARBON REACTION PRODUCT COMPRISING A SUBSTANTIAL QUANTITY OF CCL2FCCL2F.
Claim 2
Dependent Claim
98 words
THE PROCESS OF FLUORINATING CCL2=CCL2 TO FORM CCL2FCCL2F WHICH COMPRISES INTRODUCING A GAS PHASE MIXTURE COMPRISING CCL2=CCL2, SUBSTANTIALLY ANHYDROUS HF AND FREE CHLORINE INTO A REACTION ZONE, THE AMOUNT OF HF AND FREE CHLORINE BEING SUFFICIENT TO UNTIMATELY FROM A SUBSTANTIAL QUANTITY OF CCL2CCL2F, AND HEATING SAID MIXTURE IN SAID ZONE AT TEMPERATURE IN THE APPROXIMATE RANGE OF 300-600* C., WHILE IN THE PRESENCE OF ZIRCONIUM TETRAFLUORINATING-ACTIVATED CARBON CATALYST, FOR A TIME SUFFICIENT TO CAUSE FLUORINATING REACTION OF A SUBSTANTIAL QUANTITY OF CCL2=CCL2 AND EFFECT FORMATION OF A GASEOUS CHLOROFLUOROCARBON REACTION PRODUCT COMPRISING A SUBSTANTIAL QUANTITY OF CCL2FCCL2F.
References Cited (Backward Citations)
US2466189A
Cited
US2439299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |