Patent US3087974A successfully refreshed from Google Patents.
US3087974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making halogenated organic compounds
Assignee: Pennwalt Corp
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Filing: 1960-04-11
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Granted: 1963-04-30
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
- 👤 Arnold H Fainberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:52
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/37; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A METHOD FOR CONVERTING PERFLUOROCHLOROETHANE STATRING MATERIALS INTO PERHALOGENATED ETHANE PRODUCTS OF A DIFFERENT TYPE THAN THE STARTING MATERIALS WHICH COMPRISES THE STEP OF CONTACTING A PERFLUOROCHLOROETHANE HAVING AT LEAST ONE FLUORIDE AND ATOM AND AT LEAST ONE CHLORINE ATOM AT A TEMPERATURE BETWEEN 150*C AND 600*C WITH A CATALYST PREPARED BY REACTING ACTIVATED ALUMINUM WITH A LOWER FLUORCOCARBON HAVING NOT MORE THAN 1 HYDROGEN ATOM, SAID REACTION BEING CARRIED OUT BY CONTAINING VAPORS OF SAID FLUOROCARBON WITH 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 COVERTED TO CARBON OXIDE AND SAID ALUMINA INCREASES IN WEIGHT DUE TO THE ASSOCIATION OF FLUORINE DERIVED FROM SAID FLUOROCARBON THEREWITH, SAID CONTACTING AND THE REACTION BETWEEEN SAID FLUOROCARBON AND SAID ALUMINA BEING CONTINUED UNTIL THE EVOLUTION OF CARBON OXIDE SUBSTANTIALLY CEASES, WHEREUPON THE THUS TREATED ALUMINA IS AN ACTIVE CATALYST FOR THE CONVERSION OF PERFLUOROCHLOROETHANES INTO PERHALOGENATED ETHANE PRODUCTS OF A DIFFERENT TYPE.
Claim 2
Independent Claim
176 words
A METHOD FOR CONVERTING PERFLUOROCHLOROETHANE STATRING MATERIALS INTO PERHALOGENATED ETHANE PRODUCTS OF A DIFFERENT TYPE THAN THE STARTING MATERIALS WHICH COMPRISES THE STEP OF CONTACTING A PERFLUOROCHLOROETHANE HAVING AT LEAST ONE FLUORIDE AND ATOM AND AT LEAST ONE CHLORINE ATOM AT A TEMPERATURE BETWEEN 150*C AND 600*C WITH A CATALYST PREPARED BY REACTING ACTIVATED ALUMINUM WITH A LOWER FLUORCOCARBON HAVING NOT MORE THAN 1 HYDROGEN ATOM, SAID REACTION BEING CARRIED OUT BY CONTAINING VAPORS OF SAID FLUOROCARBON WITH 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 COVERTED TO CARBON OXIDE AND SAID ALUMINA INCREASES IN WEIGHT DUE TO THE ASSOCIATION OF FLUORINE DERIVED FROM SAID FLUOROCARBON THEREWITH, SAID CONTACTING AND THE REACTION BETWEEEN SAID FLUOROCARBON AND SAID ALUMINA BEING CONTINUED UNTIL THE EVOLUTION OF CARBON OXIDE SUBSTANTIALLY CEASES, WHEREUPON THE THUS TREATED ALUMINA IS AN ACTIVE CATALYST FOR THE CONVERSION OF PERFLUOROCHLOROETHANES INTO PERHALOGENATED ETHANE PRODUCTS OF A DIFFERENT TYPE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |