Patent US2567296A successfully refreshed from Google Patents.
US2567296A
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Preparation of a fischer-tropsch catalyst
Assignee: Standard Oil Development Co
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Filing: 1949-06-06
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Granted: 1951-09-11
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Expires: 1969-06-06
Abstract
No abstract record available.
Inventors
- 👤 Winfred O Milligan
- 👤 James C Schiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:36
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C1/044; C07C1/0445; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/76; C07C2523/78; C07C2527/00; C07C2527/20; C07C2527/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD FOR PREPARING A CATALYST ADAPTED FOR USE IN A FISCHER-TROPSCH SYNTYESIS CONSISTING OF THE STEPS OF PREPARING AN ADMIXTURE OF FE3O4 AND AN AMOUNT IN THE RANGE BETWEEN 1% AND 15% BY WEIGHT CALCULATED AS THE OXIDE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES, HYDROXIDES AND CARBONATES OF THE ALKALI METALS, HEATING SAID ADMIXTURE IN THE PRESENCE OF A FREE OXYGEN-CONTAINING GAS AT A TEMPERATURE IN THE RANGE BETWEEN 750* AND 1400* F. TO CONVERT THE MAJOR PORTION OF SAID FE3O4 TO FE2O3 IN THE GAMMA CRYSTALLINE FORM AND SUBSEQUENTLY CONTACTING SAID HEATED ADMIXTURE WITH A REDUCING ATMOSPHERE AT A TEMPERATURE IN THE RANGE BETWEEN 750* AND 1400* F. FOR A TIME RANGING FROM 10 MINUTES TO 24 HOURS.
Claim 2
Independent Claim
125 words
A METHOD FOR PREPARING A CATALYST ADAPTED FOR USE IN A FISCHER-TROPSCH SYNTYESIS CONSISTING OF THE STEPS OF PREPARING AN ADMIXTURE OF FE3O4 AND AN AMOUNT IN THE RANGE BETWEEN 1% AND 15% BY WEIGHT CALCULATED AS THE OXIDE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES, HYDROXIDES AND CARBONATES OF THE ALKALI METALS, HEATING SAID ADMIXTURE IN THE PRESENCE OF A FREE OXYGEN-CONTAINING GAS AT A TEMPERATURE IN THE RANGE BETWEEN 750* AND 1400* F. TO CONVERT THE MAJOR PORTION OF SAID FE3O4 TO FE2O3 IN THE GAMMA CRYSTALLINE FORM AND SUBSEQUENTLY CONTACTING SAID HEATED ADMIXTURE WITH A REDUCING ATMOSPHERE AT A TEMPERATURE IN THE RANGE BETWEEN 750* AND 1400* F. FOR A TIME RANGING FROM 10 MINUTES TO 24 HOURS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |