Patents by Inventor Keith L. Larwick

Keith L. Larwick 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).

  • Apparatus for dissolving dry polymer
    Patent number: 5344619
    Abstract: An apparatus for dissolving dry polymer particles in water consisting of a bin which contains the powdered polymer, a feeding means for the delivery of the polymer to a vortex chamber, a feed line for the delivery of water into the vortex chamber, an eductor, a centrifugal pump and a tank which contains an agitator.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: September 6, 1994
    Assignee: Betz PaperChem, Inc.
    Inventors: Keith L. Larwick, Kevin A. Demarest