Patents by Inventor Thomas P. Gandck

Thomas P. Gandck 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).

  • Pulp bleaching reactor for dispersing high consistency pulp into a gaseous bleaching agent containing ozone
    Patent number: 5863389
    Abstract: An apparatus for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine. The bleaching reactor is a horizontal vessel having a central rotatable shaft which preferably contains paddles, cut and folded screw flights or a ribbon flight, to disperse and advance the pulp particles in a plug flow manner while contacting and mixing the pulp particles with a gaseous bleaching agent such as ozone for substantially uniform bleaching thereof.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: January 26, 1999
    Assignee: Union Camp Patent Holding, Inc.
    Inventors: David E. White, Michael A. Pikulin, Thomas P. Gandck, William H. Friend