US3172866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing alumina catalyst carriers and the product thereof
Assignee: —
•
Filing: —
•
Granted: 1965-03-09
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:31
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD FOR THE PRODUCTION OF ALUMINUM OXIDE CARRIERS FOR CATALYSTS COMPRISING THE STEPS OF MIXING 100 PARTS BY WEIGHT OF ACTIVE ALUMINUM OXIDE WHICH IS EQUIVALENT TO THE ALUMINUM OXIDE OBTAINED BY HEATING HYDRATED ALUMINUM OXIDE WITH FROM 25 TO 400 PARTS BY WEIGHT CALCINED ALUMINUM OXIDE AND WITH FROM .02 TO 5% BY WEIGHT BORIC OXIDE, AND HEATING THE MIXTURE AT A TEMPERATURE BETWEEN 1600 AND 1800*C.
Claim 2
Independent Claim
69 words
A METHOD FOR THE PRODUCTION OF ALUMINUM OXIDE CARRIERS FOR CATALYSTS COMPRISING THE STEPS OF MIXING 100 PARTS BY WEIGHT OF ACTIVE ALUMINUM OXIDE WHICH IS EQUIVALENT TO THE ALUMINUM OXIDE OBTAINED BY HEATING HYDRATED ALUMINUM OXIDE WITH FROM 25 TO 400 PARTS BY WEIGHT CALCINED ALUMINUM OXIDE AND WITH FROM .02 TO 5% BY WEIGHT BORIC OXIDE, AND HEATING THE MIXTURE AT A TEMPERATURE BETWEEN 1600 AND 1800*C.
References Cited (Backward Citations)
US2976333A
Cited
US3026177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |