US2631136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of an alumina-halogenplatinum catalyst
Assignee: Universal Oil Products Co
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Filing: 1949-07-08
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Granted: 1953-03-10
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Expires: 1969-07-08
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:08
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/128; B01J27/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES COMMINGLING AQUEOUS SOLUTIONS OF A PLATINUM COMPOUND, A HYDROGEN HALIDE AND AMMONIUM HYDROXIDE, THE AMOUNT OF THE AMMONIUM HYDROXIDE BEING SUFFICIENT TO RAISE THE PH OF THE MIXED SOLUTION TO ABOVE 7, THEREBY FORMING A PRECIPITATE, HEATING THE RESULTANT MIXTURE SUFFICIENTLY TO DISSOLVE SAID PRECIPITATE AND FORM A CLEAR SOLUTION, COMMINGLING SAID CLEAR SOLUTION WITH ALUMINA IN AN AMOUNT TO FORM A FINAL CATALYST CONTAINING FROM ABOUT 0.01% TO ABOUT 10% BY WEIGHT OF PLATINUM AND FROM ABOUT 0.1% TO ABOUT 8% BY WEIGHT OF COMBINED HALOGEN, AND CALCINING THE RESULTANT COMPOSITE.
Claim 2
Independent Claim
100 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES COMMINGLING AQUEOUS SOLUTIONS OF A PLATINUM COMPOUND, A HYDROGEN HALIDE AND AMMONIUM HYDROXIDE, THE AMOUNT OF THE AMMONIUM HYDROXIDE BEING SUFFICIENT TO RAISE THE PH OF THE MIXED SOLUTION TO ABOVE 7, THEREBY FORMING A PRECIPITATE, HEATING THE RESULTANT MIXTURE SUFFICIENTLY TO DISSOLVE SAID PRECIPITATE AND FORM A CLEAR SOLUTION, COMMINGLING SAID CLEAR SOLUTION WITH ALUMINA IN AN AMOUNT TO FORM A FINAL CATALYST CONTAINING FROM ABOUT 0.01% TO ABOUT 10% BY WEIGHT OF PLATINUM AND FROM ABOUT 0.1% TO ABOUT 8% BY WEIGHT OF COMBINED HALOGEN, AND CALCINING THE RESULTANT COMPOSITE.
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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |