US3138559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of a catalyst composition by the reaction of a fluorocarbo with activated alumina
Assignee: Pennwalt Corp
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Filing: 1960-03-30
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Granted: 1964-06-23
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Expires: 1980-03-30
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
- 👤 Arnold H Fainberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:12
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A METHOD FOR PREPARING A CATALYST COMPOSITION WHICH COMPRISES REACTING ACTIVATED ALUMINA HAVING A HIGHLY POROUS STRUCTURE AND HIGH INTERNAL SURFACE AREA WITH A LOWER FLUOROCARBON HAVING FROM 1 TO ABOUT 8 CARBON ATOMS AND NOT MORE THAN 1 HYDROGEN ATOM, SAID REACTION BEING CARRIED OUT BY CONTACTING VAPORS OF SAID FLUOROCARBON WITH SAID ACTIVATED ALUMINA AT A TEMPERATURE OF THE ORDER OF 150*C. TO 800*C. SUFFICIENTLY HIGH TO INITIATE AN EXOTHERMIC REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA IN THE COURSE OF WHICH REACTION SAID FLUOROCARBON IS CONVERTED PRINCIPALLY TO DECOMPOSITION PRODUCTS SELECTED FROM THE CLASS CONSISTING OF CARBON OXIDES AND ADDITION PRODUCTS THEREOF, AND SAID ALUMINA INCREASES IN WEIGHT DUE TO THE ASSOCIATION OF FLUORINE DERIVED FROM SAID FLUOROCARBON THEREWITH, SAID CONTACTING AND THE REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA BEING CONTINUED UNTIL THE EVOLUTION OF SAID FLUOROCARBON DECOMPOSITION PRODUCTS SUBSTANTIALLY CEASES.
Claim 2
Independent Claim
145 words
A METHOD FOR PREPARING A CATALYST COMPOSITION WHICH COMPRISES REACTING ACTIVATED ALUMINA HAVING A HIGHLY POROUS STRUCTURE AND HIGH INTERNAL SURFACE AREA WITH A LOWER FLUOROCARBON HAVING FROM 1 TO ABOUT 8 CARBON ATOMS AND NOT MORE THAN 1 HYDROGEN ATOM, SAID REACTION BEING CARRIED OUT BY CONTACTING VAPORS OF SAID FLUOROCARBON WITH SAID ACTIVATED ALUMINA AT A TEMPERATURE OF THE ORDER OF 150*C. TO 800*C. SUFFICIENTLY HIGH TO INITIATE AN EXOTHERMIC REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA IN THE COURSE OF WHICH REACTION SAID FLUOROCARBON IS CONVERTED PRINCIPALLY TO DECOMPOSITION PRODUCTS SELECTED FROM THE CLASS CONSISTING OF CARBON OXIDES AND ADDITION PRODUCTS THEREOF, AND SAID ALUMINA INCREASES IN WEIGHT DUE TO THE ASSOCIATION OF FLUORINE DERIVED FROM SAID FLUOROCARBON THEREWITH, SAID CONTACTING AND THE REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA BEING CONTINUED UNTIL THE EVOLUTION OF SAID FLUOROCARBON DECOMPOSITION PRODUCTS SUBSTANTIALLY CEASES.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |