US3429751A
Expired / Lapsed
US
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Electrolytically dissolving one alloy component from a raney-type alloy encased in a porous inert material
Assignee: Hoechst AG
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Filing: 1965-11-10
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Granted: 1969-02-25
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Expires: 1985-11-10
Abstract
No abstract record available.
Inventors
- 👤 Otto Heuse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:14
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/98; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12479
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR THE MANUFACTURE OF OXYGEN SOLVENT ELECTRODES HAVING A SUPPORTING SKELETON WITH INTERPOSED METAL IN POROUS, GAS-PERMEABLE FORM FROM AN ALLOY OF THE ELECTRODE METAL WITH A LESS NOBLE METAL BY DISSOLUTION OF THE LESS NOBLE COMPONENT, WHICH COMPRISES COVERING THE SURFACE OF THE ALLOY WITH AN INERT MATERIAL, AT LEAST PART OF WHICH HAS AREAS OF POROSITY, AND EXPOSING THE ALLOY VIA SAID POROUS AREA IN AN ELECTROLYTIC BATH AS ANODE TO A CURRENT FLOW WITH A CURRENT DENSITY OF 1 TO 20 MILLIAMPERES UNTIL AT LEAST 80% BY WEIGHT OF THE LESS NOBLE COMPONENT OF THE ALLOY HAVE BEEN DISSOLVED IN THE PARTS ACCESSIBLE TO THE CURRENT.
Claim 2
Dependent Claim
111 words
A PROCESS FOR THE MANUFACTURE OF OXYGEN SOLVENT ELECTRODES HAVING A SUPPORTING SKELETON WITH INTERPOSED METAL IN POROUS, GAS-PERMEABLE FORM FROM AN ALLOY OF THE ELECTRODE METAL WITH A LESS NOBLE METAL BY DISSOLUTION OF THE LESS NOBLE COMPONENT, WHICH COMPRISES COVERING THE SURFACE OF THE ALLOY WITH AN INERT MATERIAL, AT LEAST PART OF WHICH HAS AREAS OF POROSITY, AND EXPOSING THE ALLOY VIA SAID POROUS AREA IN AN ELECTROLYTIC BATH AS ANODE TO A CURRENT FLOW WITH A CURRENT DENSITY OF 1 TO 20 MILLIAMPERES UNTIL AT LEAST 80% BY WEIGHT OF THE LESS NOBLE COMPONENT OF THE ALLOY HAVE BEEN DISSOLVED IN THE PARTS ACCESSIBLE TO THE CURRENT.
References Cited (Backward Citations)
US3097149A
Cited
US2069206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |