Patents by Inventor Patrick J. Sundholm

Patrick J. Sundholm 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 and apparatus for coating paper and the like
    Patent number: 4944960
    Abstract: A coating method and apparatus allows coating of a paper substrate from any point from the first de-watering stage to a fully dried stage. The method includes the making of a fog from a coating slurry, and directing the fog to a nozzle that does not physically contact the substrate. An air current normally carries the fog; but, electrostatic charges can be applied to the substrate and the fog to cause the fog to be attracted and adhere to the substrate. Vacuum chambers contiguous with the nozzle pick up excess fog and deliver the excess to a separator for recycling.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: July 31, 1990
    Inventors: Patrick J. Sundholm, Robert H. Donnelly, Martti Y. O. Kangas