US3640773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating fuel cell and preventing corrosion
Assignee: RTX BBN Technologies Corp
•
Filing: 1967-05-16
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Granted: 1972-02-08
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Expires: 1987-05-16
Abstract
Abstract The present invention relates in an important aspect to the prevention of electrolyte creeping out of fuel and/or oxidant inlets and the like in closed fuel cell housings, through the use of high temperature substantially nonwetting plugs disposed at appropriate locations along the inlets.
Inventors
- 👤 Robert J Allen
- 👤 Robert Lee Novack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:44
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0271; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A method in accordance with claim 1, and in which the plugs comprise polymeric fluorinated hydrocarbon plastic material.
Claim 2
Dependent Claim
24 words
A method in accordance with claim 1, and in which said inlet are electrically connected at cathode potential and said plugs are electrically insulative.
References Cited (Backward Citations)
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US2997517A
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US3206333A
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US3309229A
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Cited
US3418169A
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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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |