US2656323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of phosphoric acidgroup iv metal oxide containing catalyst
Assignee: Universal Oil Products Co
•
Filing: 1949-04-12
•
Granted: 1953-10-20
•
Expires: 1969-04-12
Abstract
No abstract record available.
Inventors
- 👤 Mitchell S Bielawski
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:36
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING AT LEAST 50% BY WEIGHT OF A PHOSPHORIC ACID, UNCALCINED SILICEOUS ADSORBENT, AND NOT OVER APPROXIMATELY 10% BY WEIGHT OF A MEMBER OF THE GROUP OF COMPOUNDS CONSISTING OF AN OXIDE, A HYDROXIDE, AND A SALT OF A METAL OF THE LEFT HAND COLUMN OF GROUP IV OF THE PERIODIC TABLE, PELLETING THE RESULTANT MIXTURE, AND CALCINING THE PELLETS AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1000* F.
Claim 2
Dependent Claim
80 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING AT LEAST 50% BY WEIGHT OF A PHOSPHORIC ACID, UNCALCINED SILICEOUS ADSORBENT, AND NOT OVER APPROXIMATELY 10% BY WEIGHT OF A MEMBER OF THE GROUP OF COMPOUNDS CONSISTING OF AN OXIDE, A HYDROXIDE, AND A SALT OF A METAL OF THE LEFT HAND COLUMN OF GROUP IV OF THE PERIODIC TABLE, PELLETING THE RESULTANT MIXTURE, AND CALCINING THE PELLETS AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1000* F.
References Cited (Backward Citations)
US2120723A
Cited
US2120702A
Cited
US2300123A
Cited
US2289063A
Cited
US2231452A
Cited
US2275182A
Cited
US2447599A
Cited
US2496621A
Cited
US2446619A
Cited
US2425493A
Cited
US2525144A
Cited
US2569092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |