Patents by Inventor Henry Gventer

Henry Gventer 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).

  • Patent number: 4764213
    Abstract: A lithographic fountain solution concentrate is disclosed, the essential components of which comprises an aqueous mixture of:(a) from about 0.1 to 1.5 percent by weight of a water soluble film forming hydrophilic gum;(b) from about 0.75 to about 8.5 percent by weight of Polyvinyl Pyrrolidone;(c) from about 5.0 to about 30.0 percent by weight of a water soluble acid etchant;(d) from about 20.0 to about 50.0 percent by weight of a water soluble or water miscible glycol; and(e) from about 0.01 to about 1.25 percent by weight of a phosphate/phosphoric acid buffer system.The concentrate is adapted for further dilution by water to yield a fountain solution which when used in the printing process offers decreased scumming and blinding of printing plates while at the same time permitting a reduction in the amount of water applied to the plate. Improved print quality, reduced tendency to wet the paper, faster ink drying and improved ink/water balance is thereby achieved.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: August 16, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Henry Gventer, Raymond Hamilton