US2583619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of a raney catalyst surface
Assignee: Standard Oil Co
•
Filing: 1944-03-15
•
Granted: 1952-01-29
•
Expires: 1964-03-15
Abstract
No abstract record available.
Inventors
- 👤 Philip C White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:29
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/08; B; B01; B01J; B01J25/00; B01J25/02; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0405; C07C1/041; C07C1/0425; C07C1/0445; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/75; C07C2523/755; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
THE METHOD OF PREPARING A CONVERSION CHAMBER HAVING CATALYTICALLY ACTIVE HEAT-EXCHANGE SURFACES FOR PROMOTING SYNTHESIS OF EXOTHERMIC REACTION OF HYDROGEN WITH CARBON MONOXIDE AND WHEREIN HEAT IS TRANSFERRED FROM SAID CATALYTIC SURFACES THROUGH A GAS IMPERMEABLE METAL WALL TO A COOLING MEDIUM WHICH METHOD COMPRISES PRODUCING AN ALLOY LAYER ON THE REACTION ZONE SIDE OF A CATALYST-FORMING METAL CHAMBER FABRICATED OF AT LEAST ONE METAL OF THE CLASS CONSISTING OF IRON, COBALT AND NICKLE TO A THICKNESS IN THE RANGE OF ABOUT 0.015 TO 0.125 INCH WITH AN ALLOYING ELEMENT OF THE CALSS CONSISTING OF SILICON, ALUMINUM, AND ZINC, SAID ALLOY LAYER CONSISTING OF BETWEEN ABOUT 35 TO 65 WEIGHT PER CENT OF THE ALLOYING ELEMENT, LEACHING THE ALLOY LAYER WITH AN AQUEOUS SOLVENT WHICH WILL DISSOLVE THE ALLOYING ELEMENT BUT NOT THE CATALYST-FORMING METAL TO REMOVE THE ALLOYING ELEMENT AND LEAVE THE CATALYST FORMING METAL IN THE FORM OF A FIXED SKELETON LAYER INTEGRALLY BONDED TO THE REACTION ZONE SIDE OF THE GAS IMPERMEABLE METAL CHAMBER, AND ACTIVATING THE FIXED CATALYST SKELETON BY TREATMENT WITH HYDROGEN.
Claim 2
Independent Claim
177 words
THE METHOD OF PREPARING A CONVERSION CHAMBER HAVING CATALYTICALLY ACTIVE HEAT-EXCHANGE SURFACES FOR PROMOTING SYNTHESIS OF EXOTHERMIC REACTION OF HYDROGEN WITH CARBON MONOXIDE AND WHEREIN HEAT IS TRANSFERRED FROM SAID CATALYTIC SURFACES THROUGH A GAS IMPERMEABLE METAL WALL TO A COOLING MEDIUM WHICH METHOD COMPRISES PRODUCING AN ALLOY LAYER ON THE REACTION ZONE SIDE OF A CATALYST-FORMING METAL CHAMBER FABRICATED OF AT LEAST ONE METAL OF THE CLASS CONSISTING OF IRON, COBALT AND NICKLE TO A THICKNESS IN THE RANGE OF ABOUT 0.015 TO 0.125 INCH WITH AN ALLOYING ELEMENT OF THE CALSS CONSISTING OF SILICON, ALUMINUM, AND ZINC, SAID ALLOY LAYER CONSISTING OF BETWEEN ABOUT 35 TO 65 WEIGHT PER CENT OF THE ALLOYING ELEMENT, LEACHING THE ALLOY LAYER WITH AN AQUEOUS SOLVENT WHICH WILL DISSOLVE THE ALLOYING ELEMENT BUT NOT THE CATALYST-FORMING METAL TO REMOVE THE ALLOYING ELEMENT AND LEAVE THE CATALYST FORMING METAL IN THE FORM OF A FIXED SKELETON LAYER INTEGRALLY BONDED TO THE REACTION ZONE SIDE OF THE GAS IMPERMEABLE METAL CHAMBER, AND ACTIVATING THE FIXED CATALYST SKELETON BY TREATMENT WITH HYDROGEN.
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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) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |