US3242011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making fuel cell electrodes
Assignee: Union Carbide Corp
•
Filing: 1962-11-01
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Granted: 1966-03-22
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Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Romeo R Witherspoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:13
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M4/8882; H01M4/8892; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD FOR THE PRODUCTION OF A FUEL CELL ELECTRODE, WHICH METHOD COMPRISES PROVIDING A GAS PERMEABLE BODY SUITABLY ACTIVE WITH RESPECT TO FUEL CELL REACTIONS, IMMERSING SAID BODY IN A HOT SOLUTION OF AN ELECTROLYTEREPELLENT MATERIAL HAVING A MOLECULAR WEIGHT IN EXCESS OF 10,000, SAID SOLUTION HAVING A TEMPERATURE SUFFICIENTLY HIGH TO DISSOLVE SAID ELECTROLYTE-REPELLENT MATERIAL, RAPIDLY CHILLING SAID BODY IN ANOTHER LIQUID AT A TEMPERATURE AT WHICH SAID MATERIAL IS SUBSTANTIALLY INSOLUBLE, AND DRYING THE COOLED BODY TO REMOVE LIQUID THEREFROM.
Claim 2
Independent Claim
83 words
A METHOD FOR THE PRODUCTION OF A FUEL CELL ELECTRODE, WHICH METHOD COMPRISES PROVIDING A GAS PERMEABLE BODY SUITABLY ACTIVE WITH RESPECT TO FUEL CELL REACTIONS, IMMERSING SAID BODY IN A HOT SOLUTION OF AN ELECTROLYTEREPELLENT MATERIAL HAVING A MOLECULAR WEIGHT IN EXCESS OF 10,000, SAID SOLUTION HAVING A TEMPERATURE SUFFICIENTLY HIGH TO DISSOLVE SAID ELECTROLYTE-REPELLENT MATERIAL, RAPIDLY CHILLING SAID BODY IN ANOTHER LIQUID AT A TEMPERATURE AT WHICH SAID MATERIAL IS SUBSTANTIALLY INSOLUBLE, AND DRYING THE COOLED BODY TO REMOVE LIQUID THEREFROM.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |