Patent US2690433A successfully refreshed from Google Patents.
US2690433A
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Preparation of catalysts by impregnation
Assignee: Individual
•
Filing: 1952-07-22
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Granted: 1954-09-28
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Expires: 1972-07-22
Abstract
No abstract record available.
Inventors
- 👤 Engel Willem Frederik
- 👤 Hoog Han
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:28
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/0201; B01J37/0203; B01J23/00; B01J23/70; B01J23/74; B01J23/75; B01J23/76; B01J23/84; B01J23/85; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN THE PREPARATION OF A CATALYST CONTAINING AN ELEMENT OF THE LEFT HAND COLUMN OF GROUP V1 OF THE PERIODICAL TABLE OF THE ELEMENTS AND AN ELEMENT OF GROUP V111 OF SAID TABLE INCORPORATED ON THE SURFACE OF A FORAMINOUS CARRIER MATERIAL BY IMPREGNATION WITH AN AQUEOUS SOLUTION, THE IMPROVEMENT WHICH COMPRISES IMPREGNATING THE FORAMINOUS CARRIER MATERIAL WITH AN AQUEOUS ACYCLIC POLYHYDRIC ALCOHOL SOLUTION CONTAINING WATER SOLUBLE COMPOUNDS OF SAID METALS, DRYIN THE RESULTING COMPOSITE, AND CALCINING THE SAME, SAID POLYHYDRIC ALCOHOL BEING COMPOSED OF CARBON, HYDROGEN AND OXYGEN.
Claim 2
Dependent Claim
89 words
IN THE PREPARATION OF A CATALYST CONTAINING AN ELEMENT OF THE LEFT HAND COLUMN OF GROUP V1 OF THE PERIODICAL TABLE OF THE ELEMENTS AND AN ELEMENT OF GROUP V111 OF SAID TABLE INCORPORATED ON THE SURFACE OF A FORAMINOUS CARRIER MATERIAL BY IMPREGNATION WITH AN AQUEOUS SOLUTION, THE IMPROVEMENT WHICH COMPRISES IMPREGNATING THE FORAMINOUS CARRIER MATERIAL WITH AN AQUEOUS ACYCLIC POLYHYDRIC ALCOHOL SOLUTION CONTAINING WATER SOLUBLE COMPOUNDS OF SAID METALS, DRYIN THE RESULTING COMPOSITE, AND CALCINING THE SAME, SAID POLYHYDRIC ALCOHOL BEING COMPOSED OF CARBON, HYDROGEN AND OXYGEN.
References Cited (Backward Citations)
US2034077A
Cited
US2486361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |