US3231428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell with catalytic electrodes
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-01-03
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Granted: 1966-01-25
•
Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Charles E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:24
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
117 words
A FUEL CELL COMPRISING AN ELECTROLYTE CONTAINER WITH AQUEOUS SULFURIC ACID ELECTROLYTE THEREIN, AN ANODE AND A CATHODE SPACED APART AND IMMERSED IN SAID ELECTROLYTE, A MIXED CATALYST CONSISTING OF A MINOR AMOUNT OF IRIDIUM AND A MAJOR AMOUNT OF PLATINUM ON EACH OF SAID ANODE AND SAID CATHODE, SAID METAL CATALYST CONSISTING ESSENTIALLY OF PARTICLES HAVING AN AVERAGE DIAMETER OF LESS THAN ABOUT 100 ANGSTROM UNITS, TRANSFER MEANS FOR PASSING A C1 TO C12 HYDROGEN FUEL INTO DUAL CONTACT WITH SAID ANODE AND SAID ELECTROLYTE, TRANSFER MEANS FOR PASSING OXYGEN INTO DUAL CONTACT WITH SAID CATHODE AND SAID ELECTROLYTE AND CONDUCTION MEANS EXTERNAL TO SAID ELECTROLYTE CONTAINER ESTABLISHING ELECTRICAL CONNECTION BETWEEN SAID ANODE AND SAID CATHODE.
Claim 2
Dependent Claim
117 words
A FUEL CELL COMPRISING AN ELECTROLYTE CONTAINER WITH AQUEOUS SULFURIC ACID ELECTROLYTE THEREIN, AN ANODE AND A CATHODE SPACED APART AND IMMERSED IN SAID ELECTROLYTE, A MIXED CATALYST CONSISTING OF A MINOR AMOUNT OF IRIDIUM AND A MAJOR AMOUNT OF PLATINUM ON EACH OF SAID ANODE AND SAID CATHODE, SAID METAL CATALYST CONSISTING ESSENTIALLY OF PARTICLES HAVING AN AVERAGE DIAMETER OF LESS THAN ABOUT 100 ANGSTROM UNITS, TRANSFER MEANS FOR PASSING A C1 TO C12 HYDROGEN FUEL INTO DUAL CONTACT WITH SAID ANODE AND SAID ELECTROLYTE, TRANSFER MEANS FOR PASSING OXYGEN INTO DUAL CONTACT WITH SAID CATHODE AND SAID ELECTROLYTE AND CONDUCTION MEANS EXTERNAL TO SAID ELECTROLYTE CONTAINER ESTABLISHING ELECTRICAL CONNECTION BETWEEN SAID ANODE AND SAID CATHODE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |