US2773846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina-chromia-molybdena catalyst
Assignee: ExxonMobil Oil Corp
•
Filing: 1952-06-13
•
Granted: 1956-12-11
•
Expires: 1972-06-13
Abstract
No abstract record available.
Inventors
- 👤 William A Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A CATALYTIC COMPOSITE CONSISTING ESSENTIALLY OF 10 TO 30 PERCENT BY WEIGHT OF CHROMIA, 50 TO 89 PERCENT BY WEIGHT ALUMINA, AND 1 TO 20 PERCENT BY WEIGHT OF MOLYBDENA, HAVING CHROMIA AND ALUMINA COMPONENTS INTIMATELY COMBINED IN THE FORM OF A DRIED HYDROGEL, WHICH HYDROGEL IS IMPREGNATED WITH THE MOLYBDENA COMPONENT.
Claim 2
Dependent Claim
52 words
A CATALYTIC COMPOSITE CONSISTING ESSENTIALLY OF 10 TO 30 PERCENT BY WEIGHT OF CHROMIA, 50 TO 89 PERCENT BY WEIGHT ALUMINA, AND 1 TO 20 PERCENT BY WEIGHT OF MOLYBDENA, HAVING CHROMIA AND ALUMINA COMPONENTS INTIMATELY COMBINED IN THE FORM OF A DRIED HYDROGEL, WHICH HYDROGEL IS IMPREGNATED WITH THE MOLYBDENA COMPONENT.
References Cited (Backward Citations)
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Cited
US2492167A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |