US2862890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of reforming catalysts
Assignee: Sunoco Inc
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Filing: 1952-10-20
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Granted: 1958-12-02
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jr James P Daugherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:11
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
METHOD OF REACTIVATING A REFORMING CATALYST COMPRISING A METAL OXIDE CARRIER AND PLATINUM IS AMOUNT OF 0.1-20% BY WEIGHT AND WHICH HAS UNDERGONE LOSS IN ACTIVITY DURING PROLONGED USED IN THE REFORMIMG OF HYDROCARBONS IN THE PRESENCE OF HYDROGEN, WHICH COMPRISES TREATING THE DEACTIVATED CATALYST, CONTAINING ESSENTIALLY ALL ITS PLATINUM AS OBTAINED FROM SUCH REFORMING OPERATION, WITH A PLATINUM-CONTAINING SOLUTION IN AMOUNT TO PROVIDE IN THE CATALYST COMPOSITION 0.01-0.1% BY WEIGHT ADDITIONAL PLATINUM BUT LESS THAN ONE-HALF THE AMOUNT OF PLATINUM THAT WAS PRESENT IN THE DEACTIVATED CATALYST AND CALCINING THE TREATED CATALYST.
Claim 2
Dependent Claim
93 words
METHOD OF REACTIVATING A REFORMING CATALYST COMPRISING A METAL OXIDE CARRIER AND PLATINUM IS AMOUNT OF 0.1-20% BY WEIGHT AND WHICH HAS UNDERGONE LOSS IN ACTIVITY DURING PROLONGED USED IN THE REFORMIMG OF HYDROCARBONS IN THE PRESENCE OF HYDROGEN, WHICH COMPRISES TREATING THE DEACTIVATED CATALYST, CONTAINING ESSENTIALLY ALL ITS PLATINUM AS OBTAINED FROM SUCH REFORMING OPERATION, WITH A PLATINUM-CONTAINING SOLUTION IN AMOUNT TO PROVIDE IN THE CATALYST COMPOSITION 0.01-0.1% BY WEIGHT ADDITIONAL PLATINUM BUT LESS THAN ONE-HALF THE AMOUNT OF PLATINUM THAT WAS PRESENT IN THE DEACTIVATED CATALYST AND CALCINING THE TREATED CATALYST.
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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |