US2636863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alumina-platinum catalysts
Assignee: Universal Oil Products Co
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Filing: 1951-12-19
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Granted: 1953-04-28
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Expires: 1971-12-19
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:38
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C; C07; C07C; C07C15/00; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES DISSOLVING A SULFIDE OF PLATINUM IN AN ACID OF THE GROUP CONSISTING OF NITRIC ACID AND SULFURIC ACID, COMPOSITION THE RESULTANT MATERIAL WITH ALUMINA, AND CALCINATING THE COMPOSITE AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1200* F.
Claim 2
Independent Claim
47 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES DISSOLVING A SULFIDE OF PLATINUM IN AN ACID OF THE GROUP CONSISTING OF NITRIC ACID AND SULFURIC ACID, COMPOSITION THE RESULTANT MATERIAL WITH ALUMINA, AND CALCINATING THE COMPOSITE AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1200* F.
Claim 3
Independent Claim
60 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES COMPOSITING A HALOGEN WITH ALUMINA, SEPARATELY DISSOLVING A SULFIDE OF PLATINUM IN AN ACID OF THE GROUP CONSISTING OF NITRIC ACID AND SULFURIC ACID, COMPOSITING THE RESULTANT MATERIAL WITH THE SEPARATELY FORMED MIXTURE OF ALUMINA AND HALOGEN AND CALCINING THE COMPOSITE AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1200* F.
Claim 4
Independent Claim
60 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES COMPOSITING A HALOGEN WITH ALUMINA, SEPARATELY DISSOLVING A SULFIDE OF PLATINUM IN AN ACID OF THE GROUP CONSISTING OF NITRIC ACID AND SULFURIC ACID, COMPOSITING THE RESULTANT MATERIAL WITH THE SEPARATELY FORMED MIXTURE OF ALUMINA AND HALOGEN AND CALCINING THE COMPOSITE AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1200* F.
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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |