US3801374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphite and vinylidene fluoride structures for fuel cells
Assignee: RTX Corp
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Filing: 1969-01-08
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Granted: 1974-04-02
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Expires: 1989-01-08
Abstract
Abstract A corrosion resistant coolant and support plate molded from graphite powder and vinylidene fluoride is disclosed for use in acid electrolyte fuel cells. A limited amount of vinylidene fluoride is used to obtain the structural characteristics so that thermal and electrical conductivity may be maintained at a satisfactory level.
Inventors
- 👤 G Dews
- 👤 R Vine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/0204; H01M8/0223; H01M8/0226; H01M8/0213; H01M8/0221; H01M8/04; H01M8/04007; H01M8/04067; H01M8/04074; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
28 words
A plate as in claim 1 wherein the structure is composed of an intimate mixture of about 88 weight percent graphite and about 12 weight percent vinylidene fluoride.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |