Patents Assigned to C.T.R. Inc.
  • Compositions useful for restoring grout
    Patent number: 4507424
    Abstract: An alkaline liquid composition is disclosed which is useful for restoring grout. The composition consists essentially of an aqueous dispersion of a film-forming polymeric resin, a compatible surfactant, a basic alkali metal salt, sodium hypochlorite, pigment, and an amount of zinc oxide effective to set the composition when it is coated onto and absorbed by the porous grout.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: March 26, 1985
    Assignee: C.T.R. Inc.
    Inventor: Daniel R. Webster