US3230182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a catalyst composition consisting of manganese oxide-coated alumina with nickel or cobalt chromites and the product thereof
Assignee: EIDP Inc
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Filing: 1962-04-13
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Granted: 1966-01-18
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Expires: 1982-04-13
Abstract
No abstract record available.
Inventors
- 👤 Alvin B Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:43
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/889; B01J23/8892; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/864; B01J23/85; B01J23/86
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
A CATALYST SELECTED FROM THE GROUP CONSISTING OF NICKEL CHROMITE AND COBALT CHROMITE CARRIED UPON ALUMINA WHICH HAS MANGANESE OXIDE AS A COATING UPON ITS SURFACE AND WITHIN ITS MICROPORES STABILIZING THE ALUMINA SO THAT ITS NITROGEN SURFACE AREA DOES NOT AS GREATLY DIMINISH UPON HEATING TO TEMPERATURES AS 1000*C.
Claim 2
Dependent Claim
50 words
A CATALYST SELECTED FROM THE GROUP CONSISTING OF NICKEL CHROMITE AND COBALT CHROMITE CARRIED UPON ALUMINA WHICH HAS MANGANESE OXIDE AS A COATING UPON ITS SURFACE AND WITHIN ITS MICROPORES STABILIZING THE ALUMINA SO THAT ITS NITROGEN SURFACE AREA DOES NOT AS GREATLY DIMINISH UPON HEATING TO TEMPERATURES AS 1000*C.
Claim 3
Dependent Claim
80 words
IN A PROCESS FOR PREPARING A CHROMITE CATALYST, ADDING A SOLUBLE MANGANESE SALT TO ALUMINA IN THE PROPORTION OF 1 TO 12% BY WEIGHT BASED ON THE ALUMINA OF MANGANESE COMPUTED A SOXIDE, CALCINING TO DECOMPOSE THE MANGANESE SALT, ADDING FROM 4 TO 18% BY WEIGHT BASED UPON THE WEIGHT OF ALUMINA AND COMPUTED AS CHROMITE OF A CHROMATE SELECTED FROM TEH GROUPS CONSISTING OF NICKEL AND COBALT BASIC CHROMATES AND CALCINING TO DECOMPOSE THE BASIC CHROMATE TO A CHROMITE.
Claim 4
Dependent Claim
80 words
IN A PROCESS FOR PREPARING A CHROMITE CATALYST, ADDING A SOLUBLE MANGANESE SALT TO ALUMINA IN THE PROPORTION OF 1 TO 12% BY WEIGHT BASED ON THE ALUMINA OF MANGANESE COMPUTED A SOXIDE, CALCINING TO DECOMPOSE THE MANGANESE SALT, ADDING FROM 4 TO 18% BY WEIGHT BASED UPON THE WEIGHT OF ALUMINA AND COMPUTED AS CHROMITE OF A CHROMATE SELECTED FROM TEH GROUPS CONSISTING OF NICKEL AND COBALT BASIC CHROMATES AND CALCINING TO DECOMPOSE THE BASIC CHROMATE TO A CHROMITE.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |