US3275475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell and method of shifting the fuel electrolyte interface
Assignee: Engelhard Industries Inc
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Filing: 1962-09-13
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Granted: 1966-09-27
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Expires: 1982-09-13
Abstract
No abstract record available.
Inventors
- 👤 Johann G E Cohn
- 👤 Peter A Danna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:26
CPC Classifications
H; H01; H01M; H01M8/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A FUEL CELL COMPRISING A CONTAINER, A POROUS CATALYTIC ANODE IN THE CONTAINER, A POROUS CATALYTIC CATHODE IN THE CONTAINER SPACED FROM THE ANODE, AN ACID ELECTROLYTE CONTACTING THE ANODE AND CATHODE, MEANS FOR MAINTAINING AN ORGANIC LIQUID FUEL IN CONTACT WITH THE ANODE, MEANS FOR PASSING AN OXIDIZER IN CONTACT WITH THE CATHODE, AND MEANS FOR FREQUENTLY CHANGING THE PRESSURE OF THE FUEL RELATIVE TO THE ELECTROLYTE THEREBY FREQUENTLY SHIFTING A FUEL-ELECTROLYTE INTERFACE IN THE POROUS CATALYTIC ANODE TO REACH NEWLY-ACTIVE CATALYST SITES IN THE ANODE, WHEREBY ANODIC POLARIZATION IS MATERIALLY REDUCED, AND WHEREIN THE PRESSURE CHANGING MEANS COMPRISES AN INNER FUEL FEED TUBE DISPOSED WITHIN AN OUTER TUBULAR PASSAGE OF THE CONTAINER AND CLOSELY SPACED THERE-
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |