US3573991A
Expired / Lapsed
US
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Process for the preparation of thin electrodes for fuel cells
Assignee: Alcatel Lucent SAS
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Filing: 1968-05-20
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Granted: 1971-04-06
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Expires: 1988-05-20
Abstract
Abstract A PROCESS FOR THE PREPARATION OF THIN ELECTRODES FOR FUEL CELLS HAVING AT LEAST ONE BARRIER LAYER SITUATED ON ITS ELECTROLYTE SIDE IN CONTACT WITH A CATALYTICALLY ACTIVE LAYER INCLUDING THE STEPS OF DEPOSITING A FINELY SCREENED POWDER ON A SUPPORT BY ELECTROSTATIC PROJECTION TO FORM THE BAR- RIER LAYER; SUBJECTING THE LAYER TO COMPRESSION AND SINTERING TREATMENTS; AND DEPOSITING THE CATALYTICALLY ACTIVE LAYER BY SIMILAR PROCESS.
Inventors
- 👤 Pierre Lenfant
- 👤 Robert Chevet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:03
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M4/8882; H01M4/8885; H01M4/8889; H01M4/8647; H01M4/8657; H01M4/8825; H01M4/8853; H01M4/8605; H01M4/861; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T428/12063; Y10T428/1209; Y10T428/12139; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12944
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |