US3248787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a gas-diffusion electrode
Assignee: BBC Brown Boveri AG Germany
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Filing: 1963-01-17
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Granted: 1966-05-03
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 Plust Heinz-Gunther
- 👤 Telschow Carl Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:40
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/98; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
PROCESS FOR THE PRODUCTION OF A GAS-DIFFUSION POROUS ELECTRODE WHICH COMPRISES FORMING AN ELECTRODE MEMBER BY PRESSING AND SINTERING A CATALYTICALLY ACTIVE METAL POWDER OF SUBSTANTIALLY UNIFORM GRAIN SIZE, APPLYING A LAYR OF A CATALYTICALLY INACTIVE METAL TO AND PARTIALLY ALALOYING IT INTO THE INNER PORE SURFACES OF THE MEMBER, AND FINALLY TREATING THE ELECTRODE MEMBER WITH AN AGENT ADAPTED TO DISSOLVE THE INACTIVE METAL.
Claim 2
Dependent Claim
65 words
PROCESS FOR THE PRODUCTION OF A GAS-DIFFUSION POROUS ELECTRODE WHICH COMPRISES FORMING AN ELECTRODE MEMBER BY PRESSING AND SINTERING A CATALYTICALLY ACTIVE METAL POWDER OF SUBSTANTIALLY UNIFORM GRAIN SIZE, APPLYING A LAYR OF A CATALYTICALLY INACTIVE METAL TO AND PARTIALLY ALALOYING IT INTO THE INNER PORE SURFACES OF THE MEMBER, AND FINALLY TREATING THE ELECTRODE MEMBER WITH AN AGENT ADAPTED TO DISSOLVE THE INACTIVE METAL.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |