US2840514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnated platinum-alumina catalysts
Assignee: Standard Oil Co
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Filing: 1954-08-20
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Granted: 1958-06-24
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Expires: 1974-08-20
Abstract
No abstract record available.
Inventors
- 👤 Harry M Brennan
- 👤 Herman S Seelig
- 👤 Haar Roy W Vander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:25
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/128; B01J27/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD FOR PREPARING AN ALUMINA-BASED HYDROFORMING CATALYST OF IMPROVED ACTIVITY HAVING PLATINUM UNIFORMLY DISTRUBUTED THEREIN, WHICH COMPRISES IMPREGNATING SOLID, HYDROUS ALUMINA CONTAINING BETWEEN ABOUT 1 AND 30 PERCENT BY WEIGHT OF COMBINED WATER IN THE PRESENCE OF BETWEEN ABOUT 0.001 AND 0.02 MOLE OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM NITRATE, ALUMINUM SULFATE, ALUMINUM CHLORIDE, ALUMINUM BROMIDE, AND ALUMINUM IODIDE PER MOLE OF DRY A12O3 WITH A SOLUTION OF A PLATINUM COMPOUND IN A QUANTITY
Claim 2
Independent Claim
79 words
A METHOD FOR PREPARING AN ALUMINA-BASED HYDROFORMING CATALYST OF IMPROVED ACTIVITY HAVING PLATINUM UNIFORMLY DISTRUBUTED THEREIN, WHICH COMPRISES IMPREGNATING SOLID, HYDROUS ALUMINA CONTAINING BETWEEN ABOUT 1 AND 30 PERCENT BY WEIGHT OF COMBINED WATER IN THE PRESENCE OF BETWEEN ABOUT 0.001 AND 0.02 MOLE OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM NITRATE, ALUMINUM SULFATE, ALUMINUM CHLORIDE, ALUMINUM BROMIDE, AND ALUMINUM IODIDE PER MOLE OF DRY A12O3 WITH A SOLUTION OF A PLATINUM COMPOUND IN A QUANTITY
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |