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US3666561A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrolyte circulating battery

Assignee: Toyota Central R&D Labs Inc
•
Filing: 1970-02-26
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Granted: 1972-05-30
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Expires: 1990-02-26
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Abstract

Abstract AN ELECTROLYTE CIRCULATING BATTERY HAVING A PLURALITY OF CELLS ELECTRICALLY CONNECTED IN SERIES AND SUPPLIED WITH CIRCULATING ELECTROYTE, WHEREIN THERE IS PROVIDED A MAIN ELECTROLYTE INLET PASSAGE AND BRANCHED INLET PASSAGES LEADING THEREFROM TO EACH CELL, AND BRANCHED OUTLET PASSAGES LEADING FROM EACH CELL TO A MAIN ELECTROLYTE OUTLET PASSAGE, THE BRANCHED INLET AND OUTLET PASSAGES BEING MADE SUFFICIENTLY LONG AND OF SUFFICIENTLY SMALL CROSS-SECTION TO PREVENT PASSAGE OF ANY SUBSTANTIAL AMOUNT OF INTERNAL CURRENT BETWEEN CELLS, GAS, SUCH AS AIR AND OXYGEN, IS INTRODUCED INTO THE BRANCHED INLET END AND/OR OUTLET PASSAGES THROUGH NEEDLES TO FORM BUBBLES IN THE ELECTROLYTE, THEREBY FURTHER INCRESING THE ELECTRIC RESISTANCE IN SAID BRANCHED PASSAGES.

Inventors

  • 👤 Takewo Chiku

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 14:27
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/24; H01M8/2455; H01M12/00; H01M12/08; H01M8/04; H01M8/04276; H01M50/00; H01M50/70; H01M50/77; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50

Claims Analysis

Total Claims: 0
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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) 1975-05-30 1975-11-29 1976-05-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-30 1979-11-29 1980-05-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-30 1983-11-29 1984-05-30 $7700.00 Window Closed / Lapsed

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