Patent US2525144A successfully refreshed from Google Patents.
US2525144A
Expired / Lapsed
US
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Manufacture of improved solid phosphoric acid catalyst
Assignee: Universal Oil Products Co
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Filing: 1948-08-26
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Granted: 1950-10-10
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Expires: 1968-08-26
Abstract
No abstract record available.
Inventors
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:12
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN THE MANUFACTURE OF SOLID CATALYST WHEREIN A PHOSPHORIC ACID IS MIXED WITH A SILICEOUS ADSORBENT TO FORM A WET PASTE WHICH IS DRIED AND CALCINED, THE METHOD OF INCREASING THE CRUSHING STRENGTH OF THE CATALYST WHICH COMPRISES INCORPORATING INTO SAID PASTE FROM ABOUT 0.5 TO ABOUT 5% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF FATTY ACIDS CONTAINING AT LEAST 10 CARBON ATOMS PER MOLECULE AND THE ALUMINUM AND GROUP II METAL SALTS OF SAID FATTY ACIDS.
Claim 2
Dependent Claim
80 words
IN THE MANUFACTURE OF SOLID CATALYST WHEREIN A PHOSPHORIC ACID IS MIXED WITH A SILICEOUS ADSORBENT TO FORM A WET PASTE WHICH IS DRIED AND CALCINED, THE METHOD OF INCREASING THE CRUSHING STRENGTH OF THE CATALYST WHICH COMPRISES INCORPORATING INTO SAID PASTE FROM ABOUT 0.5 TO ABOUT 5% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF FATTY ACIDS CONTAINING AT LEAST 10 CARBON ATOMS PER MOLECULE AND THE ALUMINUM AND GROUP II METAL SALTS OF SAID FATTY ACIDS.
References Cited (Backward Citations)
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US2018065A
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US2102073A
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US2120723A
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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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |