US2797200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for promoting hydrocarbon synthesis catalyst
Assignee: Pan American Petroleum Corp
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Filing: 1953-01-16
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Granted: 1957-06-25
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Expires: 1973-01-16
Abstract
No abstract record available.
Inventors
- 👤 Franklin T Barber
- 👤 Roscoe F Vandaveer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:48
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A PROCESS FOR PREPARING AN IRON HYDROCARBON SYNTHEISIS CATALYST HAVING IMPROVED FLUIDIZATION CHARACTERISTICS AND SELECTIVITY TO OXYGENATED ORGANIC CHEMICALS, THE STEPS WHICH COMPRISE SUBJECTING FINELY-DIVIDED IRON PARTICLES, WHEREIN A MAJOR PORTION OF SAID PARTICLES ARE IN THE FORM OF A LOWER IRON OXIDE, TO REDUCTION WITH HYDROGEN AT A TEMPERATURE RANGE FROM ABOUT 200* TO ABOUT 800* F. AND AT ELEVATED HYDROGEN PRESSURES, CONTINUING REDUCING UNTIL THE IRON CONTENT OF THE REDUCED MATERIAL IS AT LEAST ABOUT 75 TO 80 WEIGHT PERCENT, AND THEREAFTER DISPOSITING A WATER SOLUBLE INORGANIC ALKALI METAL PROMOTER COMPOUND ON SAID REDUCED MATERIAL IN AN AMOUNT SUFFICIENT TO YIELD A FINAL PROMOTER CONCENTRATION
Claim 2
Dependent Claim
108 words
IN A PROCESS FOR PREPARING AN IRON HYDROCARBON SYNTHEISIS CATALYST HAVING IMPROVED FLUIDIZATION CHARACTERISTICS AND SELECTIVITY TO OXYGENATED ORGANIC CHEMICALS, THE STEPS WHICH COMPRISE SUBJECTING FINELY-DIVIDED IRON PARTICLES, WHEREIN A MAJOR PORTION OF SAID PARTICLES ARE IN THE FORM OF A LOWER IRON OXIDE, TO REDUCTION WITH HYDROGEN AT A TEMPERATURE RANGE FROM ABOUT 200* TO ABOUT 800* F. AND AT ELEVATED HYDROGEN PRESSURES, CONTINUING REDUCING UNTIL THE IRON CONTENT OF THE REDUCED MATERIAL IS AT LEAST ABOUT 75 TO 80 WEIGHT PERCENT, AND THEREAFTER DISPOSITING A WATER SOLUBLE INORGANIC ALKALI METAL PROMOTER COMPOUND ON SAID REDUCED MATERIAL IN AN AMOUNT SUFFICIENT TO YIELD A FINAL PROMOTER CONCENTRATION
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |