US3261716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a fuel cell containing a sulfuric-nitric acid electrolyte
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-12-19
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Granted: 1966-07-19
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Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Leland H S Roblee
- 👤 Charles W Foust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:13
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/20; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF OPERATING FUEL CELL COMPRISING COMBINATION AN ANODE, A CATHODE SPACED APART FROM SAID ABODE, AN ELECTROLYTE COMPARTMENT ADAPTED TO RETAIN LIQUID EXTENDING BETWEEN AND COMMUNICATING WITH SAID ANODE AND SAID CATHODE, AN AQUEOUS SULFURIC ACID ELECTROLYTE CONSISTING ESSENTIALLY OF ABOUT 3 TO 50 WT. PERCNT SULFURIC ACID AND ABOUT 0.1 TO 1.0 WT PERCENT NITRIC ACID IN SAID ELECTROLYTE COMPARTMENT PROVIDING MEANS FOR IONIC CONDUCTANCE BETWEEN AID ANODE AND SAID CATHODE, WHICH COMPRISES PASSING A FLUID 9INTO DUAL CONTACT WITH SAID ANODE AND SAID ELECTROLYTE; PASSING A FLUID OXIDANT INTO SAID ELECTROLYTE COMPARTMENT; AND ESTABLISHIGN ELECTRICAL CONNECTION BETWEEN SAID ANODE AND SAID CATHODE EXTERNAL TO SAID ELECTROLYTE.
Claim 2
Independent Claim
110 words
A METHOD OF OPERATING FUEL CELL COMPRISING COMBINATION AN ANODE, A CATHODE SPACED APART FROM SAID ABODE, AN ELECTROLYTE COMPARTMENT ADAPTED TO RETAIN LIQUID EXTENDING BETWEEN AND COMMUNICATING WITH SAID ANODE AND SAID CATHODE, AN AQUEOUS SULFURIC ACID ELECTROLYTE CONSISTING ESSENTIALLY OF ABOUT 3 TO 50 WT. PERCNT SULFURIC ACID AND ABOUT 0.1 TO 1.0 WT PERCENT NITRIC ACID IN SAID ELECTROLYTE COMPARTMENT PROVIDING MEANS FOR IONIC CONDUCTANCE BETWEEN AID ANODE AND SAID CATHODE, WHICH COMPRISES PASSING A FLUID 9INTO DUAL CONTACT WITH SAID ANODE AND SAID ELECTROLYTE; PASSING A FLUID OXIDANT INTO SAID ELECTROLYTE COMPARTMENT; AND ESTABLISHIGN ELECTRICAL CONNECTION BETWEEN SAID ANODE AND SAID CATHODE EXTERNAL TO SAID ELECTROLYTE.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |