US3265634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for regenerating catalysts
Assignee: Monsanto Co
•
Filing: 1963-11-01
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Granted: 1966-08-09
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Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Robert G Schultz
- 👤 James M Schuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:31
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR THE REGENERATION OF SPENT COBALT OXIDE ON CARBON POLYMERIZATION CATALYSTS WHICH COMPRISES CONTACTING A COBALT OXIDE ON CARBON CATALYST COMPOSITION WHICH HAS BECOME SPENT FROM USE IN THE POLYMERIZATION OF OLEFINS, WITH A DIALKYLACYLAMIDE HAVING FROM 1 TO ABOUT 6 CARBON ATOMS IN EACH ALKYL GROUP AT A TEMPERATURE OF FROM ABOUT 125*C. TO ABOUT 200*C. FOR A TIME PERIOD OF AT LEAST ABOUT 8 HOURS, DRYING THE DIALKYLCYLAMIDE TREATED CATALYST COMPOSITION.
Claim 2
Dependent Claim
75 words
A PROCESS FOR THE REGENERATION OF SPENT COBALT OXIDE ON CARBON POLYMERIZATION CATALYSTS WHICH COMPRISES CONTACTING A COBALT OXIDE ON CARBON CATALYST COMPOSITION WHICH HAS BECOME SPENT FROM USE IN THE POLYMERIZATION OF OLEFINS, WITH A DIALKYLACYLAMIDE HAVING FROM 1 TO ABOUT 6 CARBON ATOMS IN EACH ALKYL GROUP AT A TEMPERATURE OF FROM ABOUT 125*C. TO ABOUT 200*C. FOR A TIME PERIOD OF AT LEAST ABOUT 8 HOURS, DRYING THE DIALKYLCYLAMIDE TREATED CATALYST COMPOSITION.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |