05586213 is referenced by 52 patents and cites 50 patents.

Ionic contact is established and maintained between electrodes and soil in ohmic heating of a subsurface formation for recovery of volatile and semi-volatile materials, such as hazardous waste, hydrocarbon-like materials, and valuable minerals having thermally responsive properties. A compressed, dry sponge is wrapped around an electrode, which is then inserted into a bore hole. A conductive liquid is added to the bore hole, causing the sponge to swell, creating a stable and substantial interface for the flow of heating currents.

Title
Ionic contact media for electrodes and soil in conduction heating
Application Number
7/831768
Publication Number
5586213
Application Date
February 5, 1992
Publication Date
December 17, 1996
Inventor
Richard Jambor
Chicago
IL, US
Harsh Dev
Chicago
IL, US
Guggilam C Sresty
Burbank
IL, US
Jack E Bridges
Park Ridge
IL, US
Agent
Fitch Even Tabin & Flannery
Assignee
IIT Research Institute
IL, US
IPC
E21B 43/00
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