Patents by Inventor Leo Oelbrandt

Leo Oelbrandt 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).

  • Process for the production of a printing plate by inkjet
    Patent number: 5501150
    Abstract: Process for the manufacture of a lithographic printing plate comprising the steps of:(1) information-wise projecting droplets of liquid, onto a receiving material having a hydrophilic surface to form a silver image by bringing into working relationship on said hydrophilic surface a reducible silver compound (A), a reducing agent (B) for said silver compound and physical development nuclei (C) that catalyze the reduction of said silver compound to silver metal, and(2) hydrophobizing the silver image that has been obtained through said step (1) e.g. by overall contacting the printing surface with a hydrophobizing substance for said silver image or hydrophobizing said silver image by imagewise depositing said hydrophobizing substance thereon.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: March 26, 1996
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Luc Leenders, Leo Oelbrandt, Jan Van den Bogaert, Guido Desie