US2898308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing catalysts
Assignee: Sinclair Refining Co
•
Filing: 1955-06-10
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Granted: 1959-08-04
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Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
- 👤 John W Teter
- 👤 John L Gring
- 👤 Erickson Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A METHOD OF CATALYST MANUFACTURING, THE STEPS WHICH COMPRISE AGITATING ALUMINA IN AN ESSENTIALLY AQUEOUS SLURRY MEDIUM WITH A SUBSTANTIALLY WATER-INSOLUBLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE CARBONATES, OXIDES AND HYDROXIDES OF THE IRON TRANSITION GROUP METALS, MOLYBDENUM, TUNGSTEN AND VANADIUM TO DEPOSIT SAID METAL ON THE ALUMINA, SEPARATING SOLIDS FROM THE AQUEOUS MEDIUM, DRYING THE SEPARATED SOLIDS, AND CALCINING THE DRIED MATERIAL.
Claim 2
Dependent Claim
66 words
IN A METHOD OF CATALYST MANUFACTURING, THE STEPS WHICH COMPRISE AGITATING ALUMINA IN AN ESSENTIALLY AQUEOUS SLURRY MEDIUM WITH A SUBSTANTIALLY WATER-INSOLUBLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE CARBONATES, OXIDES AND HYDROXIDES OF THE IRON TRANSITION GROUP METALS, MOLYBDENUM, TUNGSTEN AND VANADIUM TO DEPOSIT SAID METAL ON THE ALUMINA, SEPARATING SOLIDS FROM THE AQUEOUS MEDIUM, DRYING THE SEPARATED SOLIDS, AND CALCINING THE DRIED MATERIAL.
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |