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US3733220A Expired / Lapsed US ⏱️ 0.0 years remaining

Water activated lead-acid battery having dried,discharged electrodes

Assignee: ESB Inc
•
Filing: 1971-03-03
•
Granted: 1973-05-15
•
Expires: 1991-03-03
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Abstract

Abstract A LEAD-ACID BATTERY IS PRODICED BY: CHARGING THE ELECTRODES TO A STATE OF SUBSTANTIALLY FULL CHARGE IN A FORMATION TANK, DISCHARGING THE ELECTRODES TO A STATE OF SUBSTANTIALLY COMPLETE DISCHARGE IN THE FORMATION TANK, DRYING THE ELECTRODES, ASSEMBLING THE FRIED, DISCHARGED ELECTRODES INTO ELEMENTS, COATING THE EXPOSED AREAS OF ELEMENTAL LEAD IN THE ELEMENT, PARTICULARLY THE SURFACES OF THE POSITIVE CONNECTIVE STAP, WITH A NON-OXIDIZING MATERIAL OR, ALTERNATIVELY, OXIDIZING THOSE EXPOSED AREAS OF ELEMENT LEAD WITH AN OXIDIZING AGENT, AND, PLACING THE ELEMENT INTO A BATTERY CONTAINER. ENOUGH PBSO4 MAY BE CONTAINED IN THE DRY, DISCHARGED ELECTRODES SO THAT THE BATTERY CAN BE ACTIVATED BY THE ADDITION OF WATER.

Inventors

  • 👤 N Cortese
  • 👤 J Bell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 10:45
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; Y; Y02; Y02E; Y02E60/00; Y02E60/10

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) 1976-05-14 1976-11-13 1977-05-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-05-14 1980-11-13 1981-05-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-05-14 1984-11-13 1985-05-15 $7700.00 Window Closed / Lapsed

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