US2948672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnated platinum-alumina catalysts for use in the hydroforming of hydrocarbons
Assignee: Standard Oil Co
•
Filing: 1955-11-29
•
Granted: 1960-08-09
•
Expires: 1975-11-29
Abstract
No abstract record available.
Inventors
- 👤 Harry M Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:25
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
A HYDROCARBON CONVERSION PROCESS WHICH COMPRISES CONTACTING A HYDROCARBON CHARGING STOCK UNDER CONVERSION CONDITIONS WITH A PLATINUM-ALUMINA HYDROFORMING CATALYST OF IMPROVED ACTIVITY HAVING BETWEEN ABOUT 0.05 AND 1 PERCENT BY WEIGHT OF PLATINUM, BASED ON DRY AL1O3, UNIFORMLY DISTRIBUTED THEREIN, PREPARED BY IMPREGNATING SOLID, HYDROUS ALUMINA CONTAINING BETWEEN ABOUT 1 AND 30 PERCENT BY WEIGHT OF COMBINED WATER, DRY BASIS, WITH A SOLUTION OF A PLATINUM COMPOUND IN A QUANTITY WHEREBY PLATINUM IS ADDED THERETO IN A PROPORTION WITHIN SAID RANGE, AND DRYING AND CALCINING THE RESULTING CATALYTIC MIXTURE, SAID IMPREGNATION BEING CARRIED OUT IN THE PRESENCE OF AN AQUEOUS SOLUTION OF A HALOGEN-CONTAINING ALIPHATIC CARBOXYLIC ACID HAVING FROM 2 TO 5 CARBON ATOMS IN THE MOLECULE AND AN IONIZATION CONSTANT GREATER THAN ABOUT 10-2 AT 25*C. IN A MOLAR RATIO TO ALUMINA BETWEEN ABOUT 0.001 AND 0.05.
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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |