Patent US3196048A successfully refreshed from Google Patents.
US3196048A
Expired / Lapsed
US
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Cathode catalyst for fuel cells
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-12-19
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Granted: 1965-07-20
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Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Shropshire
- 👤 Barry L Tarmy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/08; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A FUEL CELL COMPRISING AN ANODE, A CATHODE, AN ELECTROLYTE COMPARTMENT, AN ION-PERMEABLE PARTITION BETWEEN SAID ANODE AND SAID CATHODE DIVIDING SAID ELECTROLYTE COMPARTMENT INTO AN ANOLYTE COMPARTMENT AND A CATHOLYTE COMPARTMENT, AN AQUEOUS ACID ELECTROLYTE SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND PHOSPHORIC ACID IN EACH OF SAID ANOLYTE AND CATHOLYTE COMPARTMENTS, CONDUCTION MEANS EXTERNAL TO SAID ELECTROLYTE COMPARTMENT ESTABLISHING ELECTRICAL CONNECTION BETWEEN SAID ANODE AND SAID CATHODE, MEANS FOR ADMITTING A FLUID FUEL INTO THE ANOLYTE COMPARTMENT, THE IMPROVEMENT WHICH COMPRISES THE COMBINATION OF ABOUT 0.5 TO 6 WT. PERCENT NITRIC ACID IN SAID CATHOLYTE COMPARTMENT WITH A GOLD CATALYZED CATHODE.
Claim 2
Dependent Claim
106 words
IN A FUEL CELL COMPRISING AN ANODE, A CATHODE, AN ELECTROLYTE COMPARTMENT, AN ION-PERMEABLE PARTITION BETWEEN SAID ANODE AND SAID CATHODE DIVIDING SAID ELECTROLYTE COMPARTMENT INTO AN ANOLYTE COMPARTMENT AND A CATHOLYTE COMPARTMENT, AN AQUEOUS ACID ELECTROLYTE SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND PHOSPHORIC ACID IN EACH OF SAID ANOLYTE AND CATHOLYTE COMPARTMENTS, CONDUCTION MEANS EXTERNAL TO SAID ELECTROLYTE COMPARTMENT ESTABLISHING ELECTRICAL CONNECTION BETWEEN SAID ANODE AND SAID CATHODE, MEANS FOR ADMITTING A FLUID FUEL INTO THE ANOLYTE COMPARTMENT, THE IMPROVEMENT WHICH COMPRISES THE COMBINATION OF ABOUT 0.5 TO 6 WT. PERCENT NITRIC ACID IN SAID CATHOLYTE COMPARTMENT WITH A GOLD CATALYZED CATHODE.
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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |