Patent US2543327A successfully refreshed from Google Patents.
US2543327A
Expired / Lapsed
US
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Preparation of reduced magnetite synthesis catalyst
Assignee: MW Kellogg Co
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Filing: 1947-03-18
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Granted: 1951-02-27
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Expires: 1967-03-18
Abstract
No abstract record available.
Inventors
- 👤 Henry G Mcgrath
- 👤 Louis C Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:36
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD FOR MANUFACTURING A CATALYST CONTAINING METALLIC IRON AS THE MAJOR COMPONENT FOR THE HYDROGENATION OF CARBON MONOXIDE TO PRODUCE ORGANIC COMPOUNDS WHICH COMPRISES ADMIXING A NATURALLY OCCURING MAGNETITE WITH AN AQUEOUS SOLUTION OF A MATERIAL COMPRISING A PROMOTER TO FORM A PASTE, DRYING THE RESULTING PASTE AT A TEMPERATURE BETWEEN ABOUT 200* F, AND ABOUT 300* F. FOR AT LEAST TWO HOURS, CALCINING THE RESULTING DRIED MATERIAL AT A TEMPERATURE BETWEEN ABOUT 1000* F. AND ABOUT 1600* F. FOR AT LEAST TWO HOURS, COOLING THE CALCINED MATERIAL, THEREAFTER ADMIXING THE CALCINED MATERIAL WITH AN AQUEOUS SOLUTION OF A POTASIUM COMPOUND CONTAINING OXYGEN TO FORM A PASTE, DRYING THE RESULTING PASTE AT A TEMPERATURE BETWEEN ABOUT 200* F. AND ABOUT 300* F. FOR AT LEAST TWO HOURS PELLETING TE DRIED MATERIAL, REDUCING THE PELLETED MATERIAL WITH HYDROGEN AT A TEMPERATURE BETWEEN ABOUT 1400* F. AND ABOUT 1500* F. UNTIL THE FORMATION OF WATER SUBSTANTIALLY CASES, AND REPULVERIZING THE REDUCED PELLETS IN AN ATMOSPHERE OF CARBON DIOXIDE.
Claim 2
Independent Claim
167 words
A METHOD FOR MANUFACTURING A CATALYST CONTAINING METALLIC IRON AS THE MAJOR COMPONENT FOR THE HYDROGENATION OF CARBON MONOXIDE TO PRODUCE ORGANIC COMPOUNDS WHICH COMPRISES ADMIXING A NATURALLY OCCURING MAGNETITE WITH AN AQUEOUS SOLUTION OF A MATERIAL COMPRISING A PROMOTER TO FORM A PASTE, DRYING THE RESULTING PASTE AT A TEMPERATURE BETWEEN ABOUT 200* F, AND ABOUT 300* F. FOR AT LEAST TWO HOURS, CALCINING THE RESULTING DRIED MATERIAL AT A TEMPERATURE BETWEEN ABOUT 1000* F. AND ABOUT 1600* F. FOR AT LEAST TWO HOURS, COOLING THE CALCINED MATERIAL, THEREAFTER ADMIXING THE CALCINED MATERIAL WITH AN AQUEOUS SOLUTION OF A POTASIUM COMPOUND CONTAINING OXYGEN TO FORM A PASTE, DRYING THE RESULTING PASTE AT A TEMPERATURE BETWEEN ABOUT 200* F. AND ABOUT 300* F. FOR AT LEAST TWO HOURS PELLETING TE DRIED MATERIAL, REDUCING THE PELLETED MATERIAL WITH HYDROGEN AT A TEMPERATURE BETWEEN ABOUT 1400* F. AND ABOUT 1500* F. UNTIL THE FORMATION OF WATER SUBSTANTIALLY CASES, AND REPULVERIZING THE REDUCED PELLETS IN AN ATMOSPHERE OF CARBON DIOXIDE.
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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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |