Patents by Inventor Eric M. Hoes

Eric M. Hoes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of making lithographic aluminum offset printing plates
    Patent number: 5362602
    Abstract: Method for making lithographic aluminum offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminum foil, an intermediate layer comprising hydrophobic polymer beads prepared by polymerization of ethylenically unsaturated monomer(s) and having an average diameter not lower than 0.2 .mu.m, and a silver halide emulsion layer, applying an aqueous alkaline solution to the photo-exposed silver halide emulsion layer in the presence of a developing agent and a silver halide solvent to form a silver image and to allow unreduced silver halide or complexes formed thereof to diffuse image-wise from the developed silver halide emulsion layer to said aluminum foil to produce thereon a silver image, and separating said emulsion layer and said intermediate layer from the imaged aluminum foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: November 8, 1994
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Paul J. Coppens, Joan T. Vermeersch, Luc H. Leenders, Ludovicus H. Vervloet, Eric M. Hoes, Eddie R. Daems
  • Method of making lithographic aluminum offset printing plates
    Patent number: 5273858
    Abstract: Method for making lithographic aluminum offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminum foil, an intermediate layer comprising hydrophobic polymer beads prepared by polymerization of ethylenically unsaturated monomer(s) and having an average diameter not lower than 0.2 .mu.m, and a silver halide emulsion layer, applying an aqueous alkaline solution to the photo-exposed silver halide emulsion layer in the presence of a developing agent and a silver halide solvent to form a silver image and to allow unreduced silver halide or complexes formed thereof to diffuse imagewise from the developed silver halide emulsion layer to said aluminum foil to produce thereon a silver image, and separating said emulsion layer and said intermediate layer from the imaged aluminum foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: December 28, 1993
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Paul J. Coppens, Joan T. Vermeersch, Luc H. Leenders, Ludovicus H. Vervloet, Eric M. Hoes, Eddie R. Daems
  • Method for making a lithographic aluminium offset printing plate by the silver salt diffusion transfer process
    Patent number: 5196290
    Abstract: The present invention provides a method for making a lithographic aluminium offset printing plate comprising the steps of:information-wise exposing an imaging element comprising on an aluminium support a layer of physical development nuclei and a silver halide emulsion layerdeveloping said information-wise exposed imaging element in the presence of a silver halide solvent to obtain a silver image in said layer of physical development nuclei andremoving all layers on top of said silver image to expose said silver image by means of washing with rinsing water characterized in that said rinsing water has a pH of 4 to 8 and is bufferred.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: March 23, 1993
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Paul J. Coppens, Ludovicus H. Vefvloet, Eric M. Hoes