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US4236989A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrolytic cell

Assignee: PPG Industries Inc
•
Filing: 1978-07-07
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Granted: 1980-12-02
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Expires: 1998-07-07
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Abstract

Abstract Disclosed is an electrolytic cell having an electrode pair of interleaved anode and cathode fingers with a synthetic separator, i.e., a permionic membrane or a microporous diaphragm, therebetween. At least one of the two electrodes of the electrode pair has a continuous electrodic surface with fluid impermeable members at opposite ends of the continuous electrodic surface and a synthetic separator sealably mounted at the fluid impermeable surfaces and extending over the face of the electrodic surface between the members of the electrode pair. The fluid impermeable members at the opposite ends of the continuous electrodic surface may either be the cell body itself or liquid impermeable elements, such as compressive masks, at opposite edges of the finger-like electrode sheets, maintaining the separator against the finger-like electrode sheet, and providing an electrolyte-tight seal therebetween.

Inventors

  • 👤 Lois A. Dahlberg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 14:10
CPC Classifications
C; C25; C25B; C25B13/00; C25B9/00; C25B9/70

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 59 words
An electrolytic cell comprising an anode and cathode electrode pair of intermeshed vertical electrode surfaces with a synthetic separator therebetween, at least one member of said electrode pair having a continuous electrodic surface with horizontally disposed fluid impermeable members at the top and bottom of said continuous electrodic surface and synthetic separator being sealably mounted at said impermeable members.
Claim 2
Dependent Claim 59 words
An electrolytic cell comprising an anode and cathode electrode pair of intermeshed vertical electrode surfaces with a synthetic separator therebetween, at least one member of said electrode pair having a continuous electrodic surface with horizontally disposed fluid impermeable members at the top and bottom of said continuous electrodic surface and synthetic separator being sealably mounted at said impermeable members.
Claim 3
Dependent Claim 38 words
The electrolytic cell of claim 1 wherein said synthetic separator (permionic membrane) is joined to said electrode at a compression seal between said electrodic surface and said fluid impermeable members whereby to provide a fluid impermeable seal therebetween.
Claim 4
Dependent Claim 22 words
The electrolytic cell of claim 1 wherein sain synthetic separator is joined to said electrode at a compression seal between said electrodes.
Claim 5
Dependent Claim 25 words
The electrolytic cell of claim 1 wherein the electrode having the continuous electrodic surface is the cathode and the synthetic separator in nearer the cathode.
Claim 6
Dependent Claim 25 words
The electrolytic cell of claim 1 wherein the electrode having the continuous electrodic surface is the anode and the synthetic separator is nearer the anode.
Claim 7
Dependent Claim 14 words
The electrolytic cell of claim 5 wherein the synthetic separator rests on the anode.
Claim 8
Dependent Claim 55 words
An electrode assembly comprising: a foraminous, metallic, electrode sheet suitable for intermeshing with a complimentary electrode sheet; a synthetic separator on the outer surface of the electrode sheet; and compressive means at the top and bottom of said electrode sheet, maintaining said synthetic separator against said electrode sheet and providing an electrolyte tight seal therebetween.
Claim 9
Dependent Claim 55 words
An electrode assembly comprising: a foraminous, metallic, electrode sheet suitable for intermeshing with a complimentary electrode sheet; a synthetic separator on the outer surface of the electrode sheet; and compressive means at the top and bottom of said electrode sheet, maintaining said synthetic separator against said electrode sheet and providing an electrolyte tight seal therebetween.

References Cited (Backward Citations)

US3809630A Cited
US4013536A Cited
US4036727A Cited
US4056459A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-12-02 1984-06-02 1984-12-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-12-02 1988-06-02 1988-12-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-12-02 1992-06-02 1992-12-02 $7700.00 Window Closed / Lapsed

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