Patent US3181973A successfully refreshed from Google Patents.
US3181973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell electrode and method of making the same
Assignee: Exide Technologies LLC
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Filing: 1960-12-28
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Granted: 1965-05-04
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Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Duddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:46
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8825; H01M4/8846; H01M4/885; H01M4/8875; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF MANUFACTURING A FUEL CELL ELECTRODE WHICH COMPRISES INTIMATELY AND HOMOGENEOUSLY MIXING A PLASTICIZED THERMOPLASTIC RESIN, PLASTICIZED POLYETHYLENE OXIDE IN A RATION BASED UPON PARTS BY WEIGHT OF SAID THERMOPLASTIC RESIN OF BETWEEN 1-3 AND 3-1, A POWDERED ELECTRICALLY CONDUCTIVE ELECTRODE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILVER, NICKEL, MIXTURES OF SILVER AND NICKEL, COPPER, AND GRAPHITE IN AN AMOUNT SUFFICIENT TO BE DISPERSED IN A CONTINUOUS PHASE THROUGHOUT SAID INTIMATELY MIXED THERMOPLASTIC RESIN AND PALLADIUM OXIDE TO PRODUCE A PLASTICIZED MASS, SAID THERMOPLASTIC RESIN BEING INSOLUBLE IN SAID POLYETHYLENE OXIDE AND ALKALINE ELECTROLYTES, SHAPING SAID MASS TO PRODUCE A FUEL CELL ELECTRODE, AND CONVERTING SAID PALLADIUM OXIDE TO METALLIC PALLADIUM IN AN ALKALINE ELECTROLYTE.
Claim 2
Independent Claim
118 words
A METHOD OF MANUFACTURING A FUEL CELL ELECTRODE WHICH COMPRISES INTIMATELY AND HOMOGENEOUSLY MIXING A PLASTICIZED THERMOPLASTIC RESIN, PLASTICIZED POLYETHYLENE OXIDE IN A RATION BASED UPON PARTS BY WEIGHT OF SAID THERMOPLASTIC RESIN OF BETWEEN 1-3 AND 3-1, A POWDERED ELECTRICALLY CONDUCTIVE ELECTRODE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILVER, NICKEL, MIXTURES OF SILVER AND NICKEL, COPPER, AND GRAPHITE IN AN AMOUNT SUFFICIENT TO BE DISPERSED IN A CONTINUOUS PHASE THROUGHOUT SAID INTIMATELY MIXED THERMOPLASTIC RESIN AND PALLADIUM OXIDE TO PRODUCE A PLASTICIZED MASS, SAID THERMOPLASTIC RESIN BEING INSOLUBLE IN SAID POLYETHYLENE OXIDE AND ALKALINE ELECTROLYTES, SHAPING SAID MASS TO PRODUCE A FUEL CELL ELECTRODE, AND CONVERTING SAID PALLADIUM OXIDE TO METALLIC PALLADIUM IN AN ALKALINE ELECTROLYTE.
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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) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |