Patent EP0046771A1 successfully refreshed from Google Patents.
US2650201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of phosphoric acid catalyst
Assignee: Universal Oil Products Co
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Filing: 1950-10-02
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Granted: 1953-08-25
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Expires: 1970-10-02
Abstract
No abstract record available.
Inventors
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR IMPROVING THE STRUCTURAL STRENGTH OF A CALCINED COMPOSITE OF AN ACID OF PHOSPHORUS AND A SOLID SUPPORTING MATERIAL WHICH COMPRISES TREATING SAID COMPOSITE WITH A HYDROLYZABLE COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, AND TIN IN AN AMOUNT SUFFICIENT TO ADD FROM ABOUT 1 TO ABOUT 10% BY WEIGHT OF A PHOSPHATE OF SAID METAL TO SAID CALCINED COMPOSITE, AND FURTHER CALCINING THE RESULTANT COMPOSITE TO FORM A SOLID CATALYTIC MATERIAL OF GREATER STRUCTURAL STRENGTH THAN THAT OF THE ORIGINAL CALCINED COMPOSITE OF PHOSPHORIC ACID AND SOLID SUPPORTING MATERIAL.
Claim 2
Dependent Claim
97 words
A PROCESS FOR IMPROVING THE STRUCTURAL STRENGTH OF A CALCINED COMPOSITE OF AN ACID OF PHOSPHORUS AND A SOLID SUPPORTING MATERIAL WHICH COMPRISES TREATING SAID COMPOSITE WITH A HYDROLYZABLE COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, AND TIN IN AN AMOUNT SUFFICIENT TO ADD FROM ABOUT 1 TO ABOUT 10% BY WEIGHT OF A PHOSPHATE OF SAID METAL TO SAID CALCINED COMPOSITE, AND FURTHER CALCINING THE RESULTANT COMPOSITE TO FORM A SOLID CATALYTIC MATERIAL OF GREATER STRUCTURAL STRENGTH THAN THAT OF THE ORIGINAL CALCINED COMPOSITE OF PHOSPHORIC ACID AND SOLID SUPPORTING MATERIAL.
References Cited (Backward Citations)
US2496621A
Cited
US2569092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |