Patent US2544869A successfully refreshed from Google Patents.
US2544869A
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Preparation of a silica-magnesia catalyst
Assignee: Universal Oil Products Co
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Filing: 1947-07-25
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Granted: 1951-03-13
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Expires: 1967-07-25
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Webb
- 👤 Reno W Moehl
- 👤 Maurice J Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:46
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/14; B01J35/00; B01J35/50; B01J35/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF MANUFACTURING A SILICA-MAGNESIA CATALYST WHICH COMPRISES COMMINGLING SILICA HYDROGEL WITH A SUFFICIENT AMOUNT OF MAGNESIUM OXIDE TO FORM A FINAL CATALYST COMPOSITE CONTAINING FROM ABOUT 20% TO ABOUT 40% BY WEIGHT OF MAGNESIA, SAID HYDROGEL AND MAGNESIUM OXIDE BEING COMMINGLED IN THE PRESENCE OF AN ADDED SOLUTION CONSISTING ESSENTIALLY OF AN AMMONIUM SALT AND WATER AND HAVING A PH BELOW ABOUT 9 AND CONTAINING FROM ABOUT 0.05 TO ABOUT 1 MOL OF AMMONIUM SALT PER MOL OF SAID MAGNESIUM OXIDE.
Claim 2
Independent Claim
83 words
A METHOD OF MANUFACTURING A SILICA-MAGNESIA CATALYST WHICH COMPRISES COMMINGLING SILICA HYDROGEL WITH A SUFFICIENT AMOUNT OF MAGNESIUM OXIDE TO FORM A FINAL CATALYST COMPOSITE CONTAINING FROM ABOUT 20% TO ABOUT 40% BY WEIGHT OF MAGNESIA, SAID HYDROGEL AND MAGNESIUM OXIDE BEING COMMINGLED IN THE PRESENCE OF AN ADDED SOLUTION CONSISTING ESSENTIALLY OF AN AMMONIUM SALT AND WATER AND HAVING A PH BELOW ABOUT 9 AND CONTAINING FROM ABOUT 0.05 TO ABOUT 1 MOL OF AMMONIUM SALT PER MOL OF SAID MAGNESIUM OXIDE.
References Cited (Backward Citations)
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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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |