US2546031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of alumina-chromia catalyst
Assignee: Phillips Petroleum Co
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Filing: 1948-10-26
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Granted: 1951-03-20
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Expires: 1968-10-26
Abstract
No abstract record available.
Inventors
- 👤 George H Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:09
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/90; B01J23/92; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE IMPROVED METHOD OF REGENERATING A CATALYST COMPRISING ALUMINA AND CHROMIA FOR THE DEHYDROGENATION OF A DEHYDROGENATABLE HYDROCARBON WHICH COMPRISES CONTACTING SAID CATALYST AFTER DEACTIVATION BY CARBONACEOUS DEPOSITS THEREON DURING SAID DEHYDROGENATION WITH AN OXYGEN-CONTAINING REGENERATION GAS HAVING A STEAM CONTENT OF FROM 10 TO 25 VOLUME PER CENT UNTIL SAID CARBONACEOUS DEPOSITS ARE REMOVED.
Claim 2
Dependent Claim
55 words
THE IMPROVED METHOD OF REGENERATING A CATALYST COMPRISING ALUMINA AND CHROMIA FOR THE DEHYDROGENATION OF A DEHYDROGENATABLE HYDROCARBON WHICH COMPRISES CONTACTING SAID CATALYST AFTER DEACTIVATION BY CARBONACEOUS DEPOSITS THEREON DURING SAID DEHYDROGENATION WITH AN OXYGEN-CONTAINING REGENERATION GAS HAVING A STEAM CONTENT OF FROM 10 TO 25 VOLUME PER CENT UNTIL SAID CARBONACEOUS DEPOSITS ARE REMOVED.
References Cited (Backward Citations)
US2399678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |