Patents by Inventor John K. Hochu

John K. Hochu 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).

  • Pitch control
    Patent number: 5246548
    Abstract: A method for the control of pitch in paper making machine dryer fabrics or equipment which are not in continuous contact with process water comprising applying to the fabrics or equipment, a water-soluble or water-dispersible cationic polymer and a water-soluble or water dispersible anionic aromatic polymer.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: September 21, 1993
    Assignee: Dearborn Chemical Company Limited
    Inventors: David A. Aston, John K. Hochu