Patents Assigned to W. R. Grace K.K.
  • Surface treating agent
    Patent number: 4478885
    Abstract: The present invention is directed to a method for treating resin printing plates to prevent or reduce smudging and/or linting using fluorocarbon surface active agent having a perfluoroalkyl group with 4 to 14 carbon atoms. The surface active agent may be anionic, cationic or ampholytic and may be used in an aqueous, alcohol or aqueous-alcohol solution.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: October 23, 1984
    Assignee: W. R. Grace K.K.
    Inventor: Takeo Kuramoto