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US3202618A
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Catalyst composition consisting of a plurality of oxides supported on a zirconia and/or hafnia base and process of preparing same
Assignee: Monsanto Co
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Filing: 1961-06-05
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Granted: 1965-08-24
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Expires: 1981-06-05
Abstract
No abstract record available.
Inventors
- 👤 Jaffe Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:10
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A SOLID CATALYST CONSISTING ESSENTIALLY OF A CATALYTICALLY ACTIVE MIXTURE OF METAL OXIDES IN THE FOLLOWING PROPORTIONS:
Claim 2
Dependent Claim
63 words
THE PROCESS OF PREPARING A CATALYST WHICH CONSISTS ESSENTIALLY OF THE STEPS OF INTIMATELY MIXING FINELY DIVIDED CUO, CR2O3, AN OXIDE OF A DIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF IRON AND COBALT AND AN OXIDE OF A TETRAVALENT TRANSITIONAL METAL SELECTED FROM THE GROUP CONSISTING OF ZR, HF AND MIXTURES THEREOF, IN AN AMOUNT SUFFICIENT TO PROVIDE A MIXTURE HAVING A
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |