Patents Assigned to Allied Paper, Inc.
  • Lithographic printing plate and method of making the same
    Patent number: RE29893
    Abstract: In a lithographic printing plate comprising a base and a lithographic printing surface thereon, said printing surface comprising colloidal silica and an insolubilized hydrophilic polymer, the improvement which comprises providing a positively charged colloidal silica as said colloidal silica component and, as said hydrophilic polymer, a nonionic or cationic polymer or a mixture of the same.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: January 30, 1979
    Assignee: Allied Paper, Inc.
    Inventor: Michael J. Shaw