US3432355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene coated and bonded cell structures
Assignee: General Electric Co
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Filing: 1962-10-24
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Granted: 1969-03-11
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Leonard W Niedrach
- 👤 Harvey R Alford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:04
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A GASEOUS FUEL CELL COMPRISING AN AQUEOUS ELECTROLYTE SOLUTION WHICH IS POSITIONED BETWEEN AND IN DIRECT ELECTRICAL CONTACT WITH A PAIR OF GAS PERMEABLE, HYDROPHOBIC, ELECTONICALLY CONDUCTIVE ELECTODE ELEMENTS, EACH OF SAID ELECTRODE ELEMENTS COMPRISING GAS ABSORBING METAL PARTICLES BONDED TOGETHER INTO A COHESIVE MASS WITH POLYTETRAFLUOROETHYLENE AND HAVING A THIN GAS PERMEABLE FILM CONSISTING ESSENTIALLY OF POLYTETRAFLUOROETHYLENE BONDED TO THE SURFACE IN CONTACT WITH THE GAS PHASE, SAID GAS ADSORBING METAL PARTICLES BONDED TOGETHER WITH POLYTETRAFLUOROETHYLENE BEING PRESENT IN THE RATIO, ON THE VOLUME BASIS, OF FROM 0.2 TO 5.2 PARTS OF SAID PARTICLES PER PART OF POLYTETRAFLUOROETHYLENE, MEANS FOR SUPPLYING A FUEL GAS TO ONE OF SAID ELECTRODE ELEMENTS AND MEANS FOR SUPPLYING AN OXIDANT GAS TO THE OTHER OF SAID ELECTRODE ELEMENTS.
Claim 2
Dependent Claim
125 words
A GASEOUS FUEL CELL COMPRISING AN AQUEOUS ELECTROLYTE SOLUTION WHICH IS POSITIONED BETWEEN AND IN DIRECT ELECTRICAL CONTACT WITH A PAIR OF GAS PERMEABLE, HYDROPHOBIC, ELECTONICALLY CONDUCTIVE ELECTODE ELEMENTS, EACH OF SAID ELECTRODE ELEMENTS COMPRISING GAS ABSORBING METAL PARTICLES BONDED TOGETHER INTO A COHESIVE MASS WITH POLYTETRAFLUOROETHYLENE AND HAVING A THIN GAS PERMEABLE FILM CONSISTING ESSENTIALLY OF POLYTETRAFLUOROETHYLENE BONDED TO THE SURFACE IN CONTACT WITH THE GAS PHASE, SAID GAS ADSORBING METAL PARTICLES BONDED TOGETHER WITH POLYTETRAFLUOROETHYLENE BEING PRESENT IN THE RATIO, ON THE VOLUME BASIS, OF FROM 0.2 TO 5.2 PARTS OF SAID PARTICLES PER PART OF POLYTETRAFLUOROETHYLENE, MEANS FOR SUPPLYING A FUEL GAS TO ONE OF SAID ELECTRODE ELEMENTS AND MEANS FOR SUPPLYING AN OXIDANT GAS TO THE OTHER OF SAID ELECTRODE ELEMENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |