US3207682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activation of electrodes of fuel cells
Assignee: Leesona Corp
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Filing: 1960-07-25
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Granted: 1965-09-21
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Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Oswin Harry Godfrey
- 👤 Young George Jamison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:01
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M8/00; H01M8/04; H01M8/04223; H01M8/04225; H01M8/04298; H01M8/043; H01M8/04302; H01M2300/00; H01M2300/0002; H01M2300/0005; H01M2300/0014; H01M2300/0017; H01M2300/0048; H01M2300/0051; H01M2300/006; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN IN SITU METHOD OF ACTIVATING THE SURFACE OF A POROUS CATALYTIC ELECTRODE OF A FUEL CELL COMPRISING CONNECTING A SOURCE OF DIRECT CURRENT POTENTIAL BETWEEN SAID ELECTRODE AND ANOTHER ELECTRODE IN SAID CELL WHILE MAINTAINING THE SURFACE TO BE ACTIVATED AND SAID OTHER ELECTRODE IN CONTACT WITH THE ELECTROLYTE, SAID POTENTIAL BEING SUFFICIENT TO CAUSE CURRENT FLOW THROUGH SAID ELECTRODE AND SAID ELECTROLYTE, MAINTAINING SAID CURRENT FLOW BY INCREASING SAID POTENTIAL, AND DISCONNECTING SAID APPLIED POTENTIAL SUBSTANTIALLY WHEN THE HYDROGEN EVOLUTION POTENTIAL IS REACHED.
Claim 2
Dependent Claim
85 words
AN IN SITU METHOD OF ACTIVATING THE SURFACE OF A POROUS CATALYTIC ELECTRODE OF A FUEL CELL COMPRISING CONNECTING A SOURCE OF DIRECT CURRENT POTENTIAL BETWEEN SAID ELECTRODE AND ANOTHER ELECTRODE IN SAID CELL WHILE MAINTAINING THE SURFACE TO BE ACTIVATED AND SAID OTHER ELECTRODE IN CONTACT WITH THE ELECTROLYTE, SAID POTENTIAL BEING SUFFICIENT TO CAUSE CURRENT FLOW THROUGH SAID ELECTRODE AND SAID ELECTROLYTE, MAINTAINING SAID CURRENT FLOW BY INCREASING SAID POTENTIAL, AND DISCONNECTING SAID APPLIED POTENTIAL SUBSTANTIALLY WHEN THE HYDROGEN EVOLUTION POTENTIAL IS REACHED.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |