US2844542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coprecipitated hydroforming catalysts
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-01-02
•
Granted: 1958-07-22
•
Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 John A Hinlicky
- 👤 George E Serniuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:23
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J2229/00; B01J2229/30; B01J2229/36; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF PREPARING A PLATINUM-ON-ALUMINA CATALYST FOR THE TREATMENT AND CONVERSION OF HYDROCARBONS WHICH COMPRISES COMBINING IN SOLUTION OF AN ALCOHOL HAVING 3 TO 5 CARBON ATOMS PER MOLECULE A MINOR AMOUNT OF A PLATINUM SALT AND A RELATIVELY LARGE AMOUNT OF AN ALUMINUM ALCOHOLATE, SIMULTANEOUSLY HYDROLYZING THE ALUMINUM ALCOHOLATE AND PRECIPITATING PLATINUM FROM SAID SOLUTION BY THE ADDITION THERETO OF AMMONIUM HYDROXIDE, DRYING THE DEPOSIT THUS OBTAINED TO OBTAIN A HYDROUS ALUMINA HAVING A FINELY DIVIDED PLATINUM DEPOSIT COLLOIDALLY DISPERSED THERETHROUGH, REDUCING THIS DEPOSIT TO PLATINUM AND RECOVERING A CATALYST COMPRISING FROM ABOUT 0.05% TO 5% BY WEIGHT OF PLATINUM BASED ON ALUMINA.
Claim 2
Independent Claim
105 words
THE METHOD OF PREPARING A PLATINUM-ON-ALUMINA CATALYST FOR THE TREATMENT AND CONVERSION OF HYDROCARBONS WHICH COMPRISES COMBINING IN SOLUTION OF AN ALCOHOL HAVING 3 TO 5 CARBON ATOMS PER MOLECULE A MINOR AMOUNT OF A PLATINUM SALT AND A RELATIVELY LARGE AMOUNT OF AN ALUMINUM ALCOHOLATE, SIMULTANEOUSLY HYDROLYZING THE ALUMINUM ALCOHOLATE AND PRECIPITATING PLATINUM FROM SAID SOLUTION BY THE ADDITION THERETO OF AMMONIUM HYDROXIDE, DRYING THE DEPOSIT THUS OBTAINED TO OBTAIN A HYDROUS ALUMINA HAVING A FINELY DIVIDED PLATINUM DEPOSIT COLLOIDALLY DISPERSED THERETHROUGH, REDUCING THIS DEPOSIT TO PLATINUM AND RECOVERING A CATALYST COMPRISING FROM ABOUT 0.05% TO 5% BY WEIGHT OF PLATINUM BASED ON ALUMINA.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |