Patents Assigned to Cathodic Engineering Equipment Company
  • Ground electrode backfill composition, anode bed and apparatus
    Patent number: 4786388
    Abstract: A low resistance non-permeable backfill especially for use in vertical anode beds for cathodic protection of subsurface metallic structures includes a mixture of carbonaceous materials, naturally occurring graphite lubricants, additives to reduce the apparent viscosity of the slurry and portland cement mixed with water and pumped as a high density fluidized suspension into the anode bed, particularly around the casing of a deep anode bed of the general type described in United States patent to Tatum U.S. Pat. No. 3,725,669.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: November 22, 1988
    Assignee: Cathodic Engineering Equipment Company
    Inventor: Joseph F. Tatum, Jr.