Patent US2879232A successfully refreshed from Google Patents.
US2879232A
Expired / Lapsed
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Regeneration of platinum-type hydroforming catalysts
Assignee: Standard Oil Co
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Filing: 1957-01-25
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Granted: 1959-03-24
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Expires: 1977-01-25
Abstract
No abstract record available.
Inventors
- 👤 Russell V Malo
- 👤 Glenn M Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:02
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR REGENERATING A PLATINUM-GROUP METAL HYDROFORMING CATALYST, SAID CATALYST HAVING BECOME DEACTIVATED DURING EXPOSURE TO A HYDROCARBON CHARGING STOCK UNDER HYDROFORMING CONDITIONS, AND CONTAINING NOT MORE THAN ABOUT 0.1 PERCENT BY WEIGHT OF CARBON DEPOSITED THEREON, WHICH COMPRISES SUBJECTING SAID CATALYST TO TREATMENT WITH AN OXIDIZING AGENT AT A TEMPERATURE BETWEEN ABOUT 950 AND 1300* F, UNDER CONDITIONS EFFECTIVE TO REMOVE CARBON THEREFROM AND TO CONVERT A SUBSTANTIAL PROPORTION OF SAID PLATINUM-GROUP METAL INTO AN OXIDE THEREOF, THEREAFTER QUENCHING SAID CATALYST TO A TEMPERATURE SUBSTANTIALLY BELOW THE RECRYSTALLIZATION TEM-
Claim 2
Dependent Claim
91 words
A PROCESS FOR REGENERATING A PLATINUM-GROUP METAL HYDROFORMING CATALYST, SAID CATALYST HAVING BECOME DEACTIVATED DURING EXPOSURE TO A HYDROCARBON CHARGING STOCK UNDER HYDROFORMING CONDITIONS, AND CONTAINING NOT MORE THAN ABOUT 0.1 PERCENT BY WEIGHT OF CARBON DEPOSITED THEREON, WHICH COMPRISES SUBJECTING SAID CATALYST TO TREATMENT WITH AN OXIDIZING AGENT AT A TEMPERATURE BETWEEN ABOUT 950 AND 1300* F, UNDER CONDITIONS EFFECTIVE TO REMOVE CARBON THEREFROM AND TO CONVERT A SUBSTANTIAL PROPORTION OF SAID PLATINUM-GROUP METAL INTO AN OXIDE THEREOF, THEREAFTER QUENCHING SAID CATALYST TO A TEMPERATURE SUBSTANTIALLY BELOW THE RECRYSTALLIZATION TEM-
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |