Patent US3257239A successfully refreshed from Google Patents.
US3257239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making combined fuel cell electrolyte and electrodes
Assignee: Gas Technology Institute
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Filing: 1962-03-05
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Granted: 1966-06-21
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Eugene B Shultz
- 👤 Leonard G Marianowski
- 👤 Henry R Linden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:32
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/14; H01M8/141; H01M8/142; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; H01M8/02; H01M8/0289; H01M8/0295; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF MAKING FUEL CELLS WHICH COMPRISES MIXING FINELY POWDERED CARBONATES OF AT LEAST ONE OF THE ALKALI OR ALKALINE EARTH METALS HAVING A MELTING POINT BELOW THE NORMAL CELL OPERATING TEMPERATURE WITH A FINELY POWDERED REFRACTORY, PRESSING THE MIXTURE INTO A FLAT PLATE, PAINTING THE FACES OF THE PLATE WITH SUSPENSIONS OF METAL POWDERS IN AN ORGANIC LIQUID MEDIUM, HEATING THE PAINT TO A TEMPERATURE SUFFICIENT TO REMOVE THE ORGANIC LIQUIDS BUT INSUFFICIENT TO SINTER THE METAL POWDER, AND RAISING THE TEMPERATURE OF THE PLATE, IN FUEL CELL SERVICE, TO NEAR OR ABOVE THE SINTERING TEMPERATURE OF SAID METAL POWDER, WHEREBY THE METAL POWDER FORMS A THIN SKELETAL COATING ON THE FACES OF SAID PLATE.
Claim 2
Independent Claim
117 words
THE METHOD OF MAKING FUEL CELLS WHICH COMPRISES MIXING FINELY POWDERED CARBONATES OF AT LEAST ONE OF THE ALKALI OR ALKALINE EARTH METALS HAVING A MELTING POINT BELOW THE NORMAL CELL OPERATING TEMPERATURE WITH A FINELY POWDERED REFRACTORY, PRESSING THE MIXTURE INTO A FLAT PLATE, PAINTING THE FACES OF THE PLATE WITH SUSPENSIONS OF METAL POWDERS IN AN ORGANIC LIQUID MEDIUM, HEATING THE PAINT TO A TEMPERATURE SUFFICIENT TO REMOVE THE ORGANIC LIQUIDS BUT INSUFFICIENT TO SINTER THE METAL POWDER, AND RAISING THE TEMPERATURE OF THE PLATE, IN FUEL CELL SERVICE, TO NEAR OR ABOVE THE SINTERING TEMPERATURE OF SAID METAL POWDER, WHEREBY THE METAL POWDER FORMS A THIN SKELETAL COATING ON THE FACES OF SAID PLATE.
References Cited (Backward Citations)
US2738375A
Cited
US2708683A
Cited
GB806592A
Cited
US2969315A
Cited
GB850706A
Cited
US2980749A
Cited
US3120456A
Cited
US3147149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |