Patent US3311504A successfully refreshed from Google Patents.
US3311504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell
Assignee: Leesona Corp
•
Filing: 1960-05-02
•
Granted: 1967-03-28
•
Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Paul P Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:02
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/24; H01M8/241; H01M8/002; H01M8/004; H01M8/2418; H01M8/2457; H01M2300/00; H01M2300/0017; H01M2300/0065; H01M2300/0082; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A FUEL CELL SYSTEM COMPRISING A HOUSING, AN ELECTROLYTE, AT LEAST ONE OXIDIZING ELECTRODE AND AT LEAST ONE FUEL ELECTRODE, THE IMPROVEMENT WHEREIN THE SYSTEM COMPRISES A PAIR OF ELONGATED CO-AXIAL MEMBERS WITH MEANS FOR SUPPORTING SAID MEMBERS IN SPACED RELATIONSHIP WITH ONE ANOTHER, ONE OF SAID MEMBERS DEFINING THE FUEL ELECTRODE, THE OXIDIZING ELECTRODE AND A POROUS MATRIX IMPREGNATED WITH AN ELECTRLYTE, SAID CO-AXIAL MEMBERS FORMING TWO GAS PASSAGES AND MEANS FOR FEEDING FUEL INTO ONE OF SAID GAS PASSAGES AT ONE END OF SAID CELL AND MEANS FOR FEEDING AN OXIDIZING MATERIAL INTO THE OTHER OF SAID GAS PASSAGES AT THE END OPPOSITE TO THE MEANS FOR FEEDING FUEL WHEREBY SAID FUEL AND OXIDIZING GASES ARE INTRODUCED AT OPPOSTIE ENDS OF THE CELL, SAID GAS PASSGES HAVING VENTING MEANS FOR REMOVING GASEOUS IMPURITIES AND CHEMICAL BY-PRODUCTS.
Claim 2
Dependent Claim
139 words
IN A FUEL CELL SYSTEM COMPRISING A HOUSING, AN ELECTROLYTE, AT LEAST ONE OXIDIZING ELECTRODE AND AT LEAST ONE FUEL ELECTRODE, THE IMPROVEMENT WHEREIN THE SYSTEM COMPRISES A PAIR OF ELONGATED CO-AXIAL MEMBERS WITH MEANS FOR SUPPORTING SAID MEMBERS IN SPACED RELATIONSHIP WITH ONE ANOTHER, ONE OF SAID MEMBERS DEFINING THE FUEL ELECTRODE, THE OXIDIZING ELECTRODE AND A POROUS MATRIX IMPREGNATED WITH AN ELECTRLYTE, SAID CO-AXIAL MEMBERS FORMING TWO GAS PASSAGES AND MEANS FOR FEEDING FUEL INTO ONE OF SAID GAS PASSAGES AT ONE END OF SAID CELL AND MEANS FOR FEEDING AN OXIDIZING MATERIAL INTO THE OTHER OF SAID GAS PASSAGES AT THE END OPPOSITE TO THE MEANS FOR FEEDING FUEL WHEREBY SAID FUEL AND OXIDIZING GASES ARE INTRODUCED AT OPPOSTIE ENDS OF THE CELL, SAID GAS PASSGES HAVING VENTING MEANS FOR REMOVING GASEOUS IMPURITIES AND CHEMICAL BY-PRODUCTS.
References Cited (Backward Citations)
US409366A
Cited
US1359881A
Cited
US2234967A
Cited
US2384463A
Cited
US2815318A
Cited
US2894053A
Cited
US2901524A
Cited
US2925455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |