US2596498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supported phosphoric acid catalyst and process of manufacture
Assignee: Universal Oil Products Co
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Filing: 1949-10-20
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Granted: 1952-05-13
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Expires: 1969-10-20
Abstract
No abstract record available.
Inventors
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:33
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR IMPROVING THE THERMAL STABILITY OF A CALCINED COMPOSITE OF A PHOSPHORIC ACID AND A SOLID SUPPORTING MATERIAL WHICH COMPRISES TREATING SAID COMPOSITE WITH AN ORGANO COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND ZINC, SAID COMPOUND BEING REACTABLE WITH FREE PHOSPHORIC ACID IN SAID COMPOSITE AND BEING IN AN AMOUNT SUFFICIENT TO ADD FROM ABOUT 1% TO ABOUT 10% BY WEIGHT OF A PHOSPHATE OF SAID METAL TO THE COMPOSITE, AND CALCINING THE THUS TREATED COMPOSITE.
Claim 2
Dependent Claim
83 words
A PROCESS FOR IMPROVING THE THERMAL STABILITY OF A CALCINED COMPOSITE OF A PHOSPHORIC ACID AND A SOLID SUPPORTING MATERIAL WHICH COMPRISES TREATING SAID COMPOSITE WITH AN ORGANO COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND ZINC, SAID COMPOUND BEING REACTABLE WITH FREE PHOSPHORIC ACID IN SAID COMPOSITE AND BEING IN AN AMOUNT SUFFICIENT TO ADD FROM ABOUT 1% TO ABOUT 10% BY WEIGHT OF A PHOSPHATE OF SAID METAL TO THE COMPOSITE, AND CALCINING THE THUS TREATED COMPOSITE.
References Cited (Backward Citations)
US2251580A
Cited
US2496621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |