US3152091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alumina-based catalysts
Assignee: Sinclair Research Inc
•
Filing: 1959-02-24
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Granted: 1964-10-06
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 John L Gring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:37
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J27/00; B01J27/02; B01J27/04; B01J27/047; B01J27/051
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A METHOD OF PREPARING ALUMINA BASED CATALYSTS THE STEPS COMPRISING DRY MIXING ALUMINA WITH A CATALYTIC AMOUNT SUFFICIENT TO AFFORD A SUBSTANTIAL CATALYTIC EFFECT OF A SUBSTANTIALLY WATER-INSOLUBLE INORGANIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF OXIDES, HYDROXIDES AND CARBONATES OF A METAL SELECTED FROM THE GROUP CONSISTING OF THE IRON TRANSITION METALS, THE METALS OF THE FIFTH AND SIXTH PERIODS OF GROUP VIB, VANADIUM AND MIXTURES THEREOF, TABLETTING THE RESULTING DRY MIXTURE, HEATING THE TABLETS INT THE PRESENCE OF WATER AT A TEMPERATURE OF ABOUT 150* TO 300*F. FOR A PERIOD OF AT LEAST ABOUT ONE-HALF AN HOUR, DRYING AND CALCINING THE WATER TREATED TABLETS AT A TEMPERATURE OF AT LEAST ABOUT 800*F.
Claim 2
Dependent Claim
115 words
IN A METHOD OF PREPARING ALUMINA BASED CATALYSTS THE STEPS COMPRISING DRY MIXING ALUMINA WITH A CATALYTIC AMOUNT SUFFICIENT TO AFFORD A SUBSTANTIAL CATALYTIC EFFECT OF A SUBSTANTIALLY WATER-INSOLUBLE INORGANIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF OXIDES, HYDROXIDES AND CARBONATES OF A METAL SELECTED FROM THE GROUP CONSISTING OF THE IRON TRANSITION METALS, THE METALS OF THE FIFTH AND SIXTH PERIODS OF GROUP VIB, VANADIUM AND MIXTURES THEREOF, TABLETTING THE RESULTING DRY MIXTURE, HEATING THE TABLETS INT THE PRESENCE OF WATER AT A TEMPERATURE OF ABOUT 150* TO 300*F. FOR A PERIOD OF AT LEAST ABOUT ONE-HALF AN HOUR, DRYING AND CALCINING THE WATER TREATED TABLETS AT A TEMPERATURE OF AT LEAST ABOUT 800*F.
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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |