US2525144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of improved solid phosphoric acid catalyst
Assignee: Universal Oil Products Co
•
Filing: 1948-08-26
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Granted: 1950-10-10
•
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
2026-10-24 17:13
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.
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US2120723A
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US2275182A
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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 |