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US3679480A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrical cell assembly

Assignee: Dow Chemical Co
•
Filing: 1969-05-08
•
Granted: 1972-07-25
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Expires: 1989-05-08
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Abstract

Abstract A CELL FOR GENERATING ELECTRICAL ENERGY IS PROVIDED COMPRISING A SEALED CONTAINER PARTITIONED INTO ANODE AND CATHODE CHAMBERS, SAID PARTITION COMPRISING AN ELECTROLYTESEPARATOR. THE LATTER IS IN THE FORM OF A BUNDLE OF HOLLOW, FINE GLASS OR CERAMIC FIBERS SEALED WITHIN A COMMON HEADER. THE FIBERS ARE SEALED AT THE END WHICH PENETRATES THE CATHODE CHAMBER AND ARE IN OPEN COMMUNICATION WITH THE ANODE CHAMBER. PREFERRED ANODE AND CATHODE MATERIALS COMPRISE AN ALKALI METAL SUCH AS SODIUM OR POTASSIUM AND SULFUR RESPECTIVELY. THE CELL IS USEFUL AS EITHER A PRIMARY OR SECONDARY BATTERY. BY PROVIDING FOR THE INTRODUCTION OF ALKALI METAL AND THE WITHDRAWAL OF CATHOLYTE DURING OPERATION, IT CAN BE READILY MODIFIED TO PROVIDE A FUEL CELL.

Inventors

  • 👤 William E Brown
  • 👤 Robert G Heitz
  • 👤 Charles A Levine

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 09:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M6/00; H01M6/14; H01M6/18; H01M6/20; H01M8/00; H01M8/22; 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) 1975-07-25 1976-01-24 1976-07-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-25 1980-01-24 1980-07-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-25 1984-01-24 1984-07-25 $7700.00 Window Closed / Lapsed

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