US2529236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of cobalt oxo catalyst
Assignee: Shell Development Co
•
Filing: 1948-05-01
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Granted: 1950-11-07
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Expires: 1968-05-01
Abstract
No abstract record available.
Inventors
- 👤 Marius T Hart
- 👤 Weeda Krijn Arnout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:48
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/94; 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
62 words
THE PROCESS FOR THE REACTIVATION OF COBALT CATALYST WHICH HAS BEEN DEACTIVATED THROUGH USE IN THE PRODUCTION OF OXYHGENATED COMPOUNDS BY THE OXO PROCESS WHICH COMPRISES THE STEPS OF HEATING THE SAID DEACTIVATED CATALYST TO A TEMPERATURE BETWEEN 700* C. AND 900* C. IN CONTACT WITH OXYGEN AND THEN REDUCING THE CATALYST WITH A REDUCING GAS AT A TEMPERATURE ABOVED 400* C.
Claim 2
Dependent Claim
62 words
THE PROCESS FOR THE REACTIVATION OF COBALT CATALYST WHICH HAS BEEN DEACTIVATED THROUGH USE IN THE PRODUCTION OF OXYHGENATED COMPOUNDS BY THE OXO PROCESS WHICH COMPRISES THE STEPS OF HEATING THE SAID DEACTIVATED CATALYST TO A TEMPERATURE BETWEEN 700* C. AND 900* C. IN CONTACT WITH OXYGEN AND THEN REDUCING THE CATALYST WITH A REDUCING GAS AT A TEMPERATURE ABOVED 400* C.
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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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |