US3207600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing electrodes for fuel cells
Assignee: Panasonic Holdings Corp
•
Filing: 1963-06-05
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Granted: 1965-09-21
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Expires: 1983-06-05
Abstract
No abstract record available.
Inventors
- 👤 Hirai Taketsugu
- 👤 Iwaki Tsutomu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:14
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8875; B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/24; B22F3/26; H01M4/8878; H01M4/8882; H01M4/8885; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD FOR MANUFACTURING ELECTRODES FOR USE IN FUEL CELLS, COMPRISING THE STEPS OF MIXING 2 TO 15 PARTS OF ACTIVE CARBON POWDER HAVING A MEAN PARTICLE DIAMETER OF 30 TO 50U WITH 100 PARTS OF CARBONYL NICKEL POWDER HAVING A MEAN PARTICLE DIAMETER OF 5 TO 6U, MOLDING THE RESULTANT MIXTURE INTO THE FORM OF ELECTRODES, AND SINTERING THE MOLDED MIXTURE IN A HYDROGEN ATMOSPHERE FOR 20 MINUTES AT 980*C.
Claim 2
Independent Claim
71 words
A METHOD FOR MANUFACTURING ELECTRODES FOR USE IN FUEL CELLS, COMPRISING THE STEPS OF MIXING 2 TO 15 PARTS OF ACTIVE CARBON POWDER HAVING A MEAN PARTICLE DIAMETER OF 30 TO 50U WITH 100 PARTS OF CARBONYL NICKEL POWDER HAVING A MEAN PARTICLE DIAMETER OF 5 TO 6U, MOLDING THE RESULTANT MIXTURE INTO THE FORM OF ELECTRODES, AND SINTERING THE MOLDED MIXTURE IN A HYDROGEN ATMOSPHERE FOR 20 MINUTES AT 980*C.
References Cited (Backward Citations)
US747454A
Cited
US1067003A
Cited
US1774381A
Cited
US1988861A
Cited
US2646456A
Cited
US2933415A
Cited
US2985599A
Cited
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 |