Patent US3044787A successfully refreshed from Google Patents.
Patent US2912470A successfully refreshed from Google Patents.
US2912470A
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Method of dehydrohalogenating halogenated hydrocarbons
Assignee: Detrex Corp
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Filing: 1956-01-04
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Granted: 1959-11-10
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Expires: 1976-01-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Kircher
- 👤 Robert J Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:32
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/20; B01J27/22; C; C07; C07C; C07C17/00; C07C17/25; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN A METHOD OF CATAYTICALLY DEHYDROHALOGENATING A SATURATED HALOGENATED HYDROCRBON IN THE PRESENCE OF AN ACTIVATED CARBON CATALYST, SAID ACTIVATED CARBON NORMALLY CONTAINING IRON IN AN AMOUNT SUFFICIENT TO POISON SAID ACTIVATED CARBON CATALYST, THE STEPS WHICH COMPRISE CHEMICALLY REMOVING IRON IMPURITIES FROM THE ACTIVATED CARBON CATALYST AND CONTACTING SAID HYDROCARBON IN THE GASEOUS STATE WITH THE RESULTING TREATED ACTIVATED CARBON CATALYST.
Claim 2
Dependent Claim
62 words
IN A METHOD OF CATAYTICALLY DEHYDROHALOGENATING A SATURATED HALOGENATED HYDROCRBON IN THE PRESENCE OF AN ACTIVATED CARBON CATALYST, SAID ACTIVATED CARBON NORMALLY CONTAINING IRON IN AN AMOUNT SUFFICIENT TO POISON SAID ACTIVATED CARBON CATALYST, THE STEPS WHICH COMPRISE CHEMICALLY REMOVING IRON IMPURITIES FROM THE ACTIVATED CARBON CATALYST AND CONTACTING SAID HYDROCARBON IN THE GASEOUS STATE WITH THE RESULTING TREATED ACTIVATED CARBON CATALYST.
References Cited (Backward Citations)
US1188936A
Cited
GB302321A
Cited
US1919886A
Cited
US2323226A
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US2300600A
Cited
US2749359A
Cited
US2755319A
Cited
US2787528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |