Patents by Inventor Ronald James Kumpfmiller

Ronald James Kumpfmiller 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).

  • Aqueous developable photosensitive polyurethane-methacrylate
    Patent number: 6423472
    Abstract: Butadiene-polyether prepolymers which can be used in photopolymer resins are prepared by reacting butadiene homopolymer with a stoichiometric excess of isocyanate and then reacting the product with polyether diol. Thereafter the composition is reacted with hydroxyalkyl(meth)acrylate and alkyldialkanolamine. Flexographic printing plates may be prepared using photopolymer resin comprising butadiene-polyether prepolymers.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: July 23, 2002
    Assignee: MacDermid Graphic Arts, Inc.
    Inventors: Ronald James Kumpfmiller, Martin Lewis Carter
  • Aqueous developable photosensitive polyurethane-methacrylate
    Patent number: 6066436
    Abstract: Butadiene-polyether prepolymers which can be used in photopolymer resins are prepared by reacting butadiene homopolymer with a stoichiometric excess of isocyanate and then reacting the product with polyether diol. Thereafter the composition is reacted with hydroxyalkyl(meth)acrylate and alkyldialkanolamine. Flexographic printing plates may be prepared using photopolymer resin comprising butadiene-polyether prepolymers.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: May 23, 2000
    Assignee: Polyfibron Technologies, Inc.
    Inventors: Ronald James Kumpfmiller, Martin Lewis Carter
  • Methods for off-contact imaging solid printing plates
    Patent number: 6007967
    Abstract: The present invention relates to methods for off-contact imaging solid relief printing plates and, in particular, to methods for imaging solid photocurable elements through a negative, where there is a gap between the solid photocurable element and the negative. The present invention also relates to printing plates produced by these methods.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: December 28, 1999
    Assignee: Polyfibron Technologies, Inc.
    Inventors: Ronald James Kumpfmiller, David Andrew Recchia