Patent US2565347A successfully refreshed from Google Patents.
US2565347A
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Stabilization of pyrophoric metal catalysts under fluidized conditions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1947-02-13
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Granted: 1951-08-21
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Expires: 1967-02-13
Abstract
No abstract record available.
Inventors
- 👤 Bremner John George Mackay
- 👤 Beaumont Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:24
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/16; B01J37/18; B01J23/00; B01J23/70; B01J37/02; B01J37/0201; Y; Y10; Y10S; Y10S502/00; Y10S502/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS FOR THE PREPARATION OF CATALYSTS WHICH COMPRISES REDUCING A HEAVY METAL COMPOUND OF THE GROUP CONSISTING OF METAL OXIDES, HYDROXIDES AND CARBONATES IN PARTICULATE FORM WITH A MIXTURE OF HYDROGEN AND AN INERT GAS, AFTER REDUCTION COOLING THE REDUCED METAL COMPOUND TO A TEMPERATURE BELOW 60* C. BY A STREAM OF INERT GAS, AND THEREAFTER SUPERFICIALLY OXIDIZING THE REDUCED METAL COMPOUND AT A TEMPERATURE BELOW 60* C. BY A MIXTURE OF OXYGEN AND AN INERT GAS, THE MIXTURE OF HYDROGEN AND INERT GAS DURING THE REDUCTION, INERT GAS DURING THE COOLING, AND OXYGEN AND INERT GAS DURING THE OXIDATION SUPPORTING RESPECTIVELY THE METAL COMPOUND, REDUCED METAL AND OXIDIZED METAL IN THE FLUIDIZED STATE DURING THE RESPECTIVE STAGES OF PREPARATION.
Claim 2
Dependent Claim
121 words
A PROCESS FOR THE PREPARATION OF CATALYSTS WHICH COMPRISES REDUCING A HEAVY METAL COMPOUND OF THE GROUP CONSISTING OF METAL OXIDES, HYDROXIDES AND CARBONATES IN PARTICULATE FORM WITH A MIXTURE OF HYDROGEN AND AN INERT GAS, AFTER REDUCTION COOLING THE REDUCED METAL COMPOUND TO A TEMPERATURE BELOW 60* C. BY A STREAM OF INERT GAS, AND THEREAFTER SUPERFICIALLY OXIDIZING THE REDUCED METAL COMPOUND AT A TEMPERATURE BELOW 60* C. BY A MIXTURE OF OXYGEN AND AN INERT GAS, THE MIXTURE OF HYDROGEN AND INERT GAS DURING THE REDUCTION, INERT GAS DURING THE COOLING, AND OXYGEN AND INERT GAS DURING THE OXIDATION SUPPORTING RESPECTIVELY THE METAL COMPOUND, REDUCED METAL AND OXIDIZED METAL IN THE FLUIDIZED STATE DURING THE RESPECTIVE STAGES OF PREPARATION.
References Cited (Backward Citations)
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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) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |