US3185651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing an alumina-supported catalyst composition and the product thereof
Assignee: Pro Catalyse SA
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Filing: 1961-04-03
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Granted: 1965-05-25
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Bosc Robert
- 👤 Belon Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:56
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J21/00; B01J21/02; B01J21/04; B01J37/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR MANUFACTURING ALUMINA BASE CATALYTIC CONGLOMERATES EXHIBITING IMPROVED CATALYTIC ACTIVITY AND IMPROVED RESISTANCE TO ATTRITION, COMPRISING THE SUCCESSIVE STEPS OF -(A) AGGLOMERATING POWDERED ALUMINA-CONTAINING CATALYST CONSTITUENTS; (B) AGEING THE RESULTING CONGLOMERATES IN MOIST AIR AT LESS THAN ABOUT 150*C.; (C) CALCINATING THE AGED CONGLOMERATES AT ABOUT 300700*C.; (D) PULVERIZING THE CALCINATED CONGLOMERATES TO FORM A POWDER; (E) AGGLOMERATING SAID POWDER; (F) AGEING AT LESS THAN ABOUT 150*C. THE CONGLOMERATES RESULTING FROM STEP (E); AND (G) CALCINATING THE RESULTING AGED CONGLOMERATES AT ABOUT 300-700*C.
Claim 2
Dependent Claim
85 words
A PROCESS FOR MANUFACTURING ALUMINA BASE CATALYTIC CONGLOMERATES EXHIBITING IMPROVED CATALYTIC ACTIVITY AND IMPROVED RESISTANCE TO ATTRITION, COMPRISING THE SUCCESSIVE STEPS OF -(A) AGGLOMERATING POWDERED ALUMINA-CONTAINING CATALYST CONSTITUENTS; (B) AGEING THE RESULTING CONGLOMERATES IN MOIST AIR AT LESS THAN ABOUT 150*C.; (C) CALCINATING THE AGED CONGLOMERATES AT ABOUT 300700*C.; (D) PULVERIZING THE CALCINATED CONGLOMERATES TO FORM A POWDER; (E) AGGLOMERATING SAID POWDER; (F) AGEING AT LESS THAN ABOUT 150*C. THE CONGLOMERATES RESULTING FROM STEP (E); AND (G) CALCINATING THE RESULTING AGED CONGLOMERATES AT ABOUT 300-700*C.
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |