US3303055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas electrode for a fuel cell containing radioactive material
Assignee: Yardney International Corp
•
Filing: 1961-07-21
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Granted: 1967-02-07
•
Expires: 1981-07-21
Abstract
No abstract record available.
Inventors
- 👤 Gumucio Ricardo Salcedo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/08; B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; C; C25; C25B; C25B15/00; H01M10/00; H01M10/42; H01M8/00; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN ELECTRIC-CURRENT-GENERATING FUEL-CELL ELECTRODE FOR SUSTAINING AN ELECTRODE REACTION OF A GAS FED INTO SAID ELECTRODE AT AN INTERFACE OF SAID ELECTRODE WITH AN ELECTROYLTE, SAID ELECTRODE COMPRISING A COHERENT POROUS BODY HAVING A GAS-ENTRANCE SIDE AND AN ELECTROLYTE-CONTACTING SIDE, SAID POROUS BODY CONSISTING OF AT LEAST TWO DISTINCT LAYERS RESPECTIVELY DISPOSED ALONG SAID SIDES AND BONDED TOGETHER, SAID LAYER INCLUDING A FIRST LAYER CONSISTING ESSENTIALLY OF RELATIVELY COARSE PARICLES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILVER CARBON AND COPPER, AND A SECOND LAYER CONSISTING ESSENTIALLY OF RELATIVELY FINE PARTICLES OF SAID MATERIAL; AND A RADIOACTIVE SUBSTANCE IN AT LEAST ONE OF SAID LAYERS AND PRESENT IN SUBSTANTIALLY 100 MICROCURIES TO 1 CURIE PER CM.2 OF SAID BODY.
Claim 2
Dependent Claim
121 words
AN ELECTRIC-CURRENT-GENERATING FUEL-CELL ELECTRODE FOR SUSTAINING AN ELECTRODE REACTION OF A GAS FED INTO SAID ELECTRODE AT AN INTERFACE OF SAID ELECTRODE WITH AN ELECTROYLTE, SAID ELECTRODE COMPRISING A COHERENT POROUS BODY HAVING A GAS-ENTRANCE SIDE AND AN ELECTROLYTE-CONTACTING SIDE, SAID POROUS BODY CONSISTING OF AT LEAST TWO DISTINCT LAYERS RESPECTIVELY DISPOSED ALONG SAID SIDES AND BONDED TOGETHER, SAID LAYER INCLUDING A FIRST LAYER CONSISTING ESSENTIALLY OF RELATIVELY COARSE PARICLES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILVER CARBON AND COPPER, AND A SECOND LAYER CONSISTING ESSENTIALLY OF RELATIVELY FINE PARTICLES OF SAID MATERIAL; AND A RADIOACTIVE SUBSTANCE IN AT LEAST ONE OF SAID LAYERS AND PRESENT IN SUBSTANTIALLY 100 MICROCURIES TO 1 CURIE PER CM.2 OF SAID BODY.
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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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |