US3220957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst regeneration
Assignee: Standard Oil Co
•
Filing: 1962-10-31
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Granted: 1965-11-30
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Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 Melvern C Hoff
- 👤 Arnold N Wennerberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:48
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR REGENERATING DEACTIVATED OXO COBALT HYDROGENATION CATALYST WHEREBY SAID DEACTIVATED COBALT HYDROGENATION CATALYST IS SUBSTANTIALLY ALL CONVERTED TO AN ACTIVE COBALT HYDROGENATION CATALYST WHICH COMPRISES: CONTACTING A DEACTIVATED COBALT HYDROGENATION CATALYST WITH CARBON MONOXIDE UNDER A PRESSURE OF CARBON MONOXIDE OF FROM ABOUT 500 TO ABOUT 2000 P.S.I. AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 310*F. TO ABOUT 600*F., WHILE WASHING SAID DEACTIVATED COBALT HYDROGENATION CATALYST WITH A COBALT-INERT ORGANIC LIQUID.
Claim 2
Dependent Claim
75 words
A PROCESS FOR REGENERATING DEACTIVATED OXO COBALT HYDROGENATION CATALYST WHEREBY SAID DEACTIVATED COBALT HYDROGENATION CATALYST IS SUBSTANTIALLY ALL CONVERTED TO AN ACTIVE COBALT HYDROGENATION CATALYST WHICH COMPRISES: CONTACTING A DEACTIVATED COBALT HYDROGENATION CATALYST WITH CARBON MONOXIDE UNDER A PRESSURE OF CARBON MONOXIDE OF FROM ABOUT 500 TO ABOUT 2000 P.S.I. AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 310*F. TO ABOUT 600*F., WHILE WASHING SAID DEACTIVATED COBALT HYDROGENATION CATALYST WITH A COBALT-INERT ORGANIC LIQUID.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |