US2746937A
Expired / Lapsed
US
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Process of preparing platinum-alumina hydroforming catalysts
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1951-05-01
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Granted: 1956-05-22
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Expires: 1971-05-01
Abstract
No abstract record available.
Inventors
- 👤 Edward A Hunter
- 👤 Jr Charles N Kimberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:14
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/44; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/10; B01J21/00; B01J21/02; B01J21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR MANUFACTURING PLATINUM-ALUMINA AND PALLADIUM-ALUMINA CATALYST WHICH COMPRISES PREPARING AN ALUMINA HYDROSOL BY TREATING ALUMINUM METAL WITH A DILUTE ACID IN THE PRESENCE OF CATALYST AMOUNTS OF MERCURY, MIXING A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM WITH SAID ALUMINA HYDROSOL, DRYING AND CALCINING THE RESULTANT PRODUCT AND TREATING THE CALCINED MIXTURE WITH HYDROGEN TO ACTIVATE THE SAME.
Claim 2
Dependent Claim
66 words
A PROCESS FOR MANUFACTURING PLATINUM-ALUMINA AND PALLADIUM-ALUMINA CATALYST WHICH COMPRISES PREPARING AN ALUMINA HYDROSOL BY TREATING ALUMINUM METAL WITH A DILUTE ACID IN THE PRESENCE OF CATALYST AMOUNTS OF MERCURY, MIXING A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM WITH SAID ALUMINA HYDROSOL, DRYING AND CALCINING THE RESULTANT PRODUCT AND TREATING THE CALCINED MIXTURE WITH HYDROGEN TO ACTIVATE THE SAME.
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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |