Filter press electrolyzer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5421977





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The present invention relates to a filter press electrolyzer of the type having front and rear bulkheads. The electrolyzer comprises an electrolytic cell between the bulkheads. The cell comprises a pair of planar electrode assemblies, typically including a center compartment assembly therebetween, all in a stacked relationship. Separators are clamped between the electrode and center compartment assemblies. Each electrode assembly comprises an annular frame defining an electrolyte chamber, a planar electrode member having an electrode active area within said chamber, and a current distributing bus on the side of the electrode member which is opposite the side facing the separator. The current distributing bus has a planar surface area which is substantially co-extensive with the electrode active area. Each of the electrode assemblies comprises a plurality of spaced-apart separator strips affixed to the electrode member on the side opposite the current distributing bus. The separator strips separate the electrode member from the separator. The bulkheads include means for compression of the electrode assemblies one against the other. The separator strips of the electrode assemblies are aligned so that the separator strips transmit the compression forces within the electrolyzer from one electrode assembly to the other.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Eltech Systems CorporationBOCA RATON, FL37

International Classification(s)

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Inventor Name Address # of filed Patents Total Citations
Getsy, Andy W Eastlake, OH 12 144
Niksa, Marilyn J Concord, OH 23 389

Cited Art Landscape

Patent Info (Count) # Cites Year
Exxon Research and Engineering Company (1)
* 4396689 Separator-spacer for electrochemical systems 28 1981
DE NORA S.P.A. (1)
* 4654136 Monopolar or bipolar electrochemical terminal unit having a novel electric current transmission element 11 1984
Olin Corporation (1)
* 4312737 Electrode for monopolar filter press cells 5 1980
* 5041196 Electrochemical method for producing chlorine dioxide solutions 18 1989
* 4517069 Titanium and titanium hydride reticulates and method for making 25 1983
Eltech Systems Corporation (2)
* 4738763 Monopolar, bipolar and/or hybrid membrane cell 10 1986
* 4923582 Monopolar, bipolar and/or hybrid memberane cell 28 1988
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
Other [Check patent profile for assignment information] (1)
* 8486236 Electrolysis chamber 0 2010
Benavides, Alfonso Gerardo (1)
* 7309408 Industrial wastewater treatment and metals recovery apparatus 9 2003
* 5919344 Diaphragm element for an electrolytic filter press assembly 2 1998
Huron Tech Corp (1)
* 6027620 Filter press electrolyzer 3 1998
6113784 Filter 45 1998
Energy Technologies Corp. (1)
* 2004/0035,696 Apparatus and method for membrane electrolysis for process chemical recycling 0 2003
Northwest Aluminum Technologies (1)
6800191 Electrolytic cell for producing aluminum employing planar anodes 3 2002
* Cited By Examiner