Patents by Inventor Douglas S. Hoerning

Douglas S. Hoerning 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 and method for mixing and dispensing chemical concentrates at point of use
    Patent number: 5203366
    Abstract: A modular apparatus (10) for preparing dilute chemical compositions at the point of use, e.g., a customer's plant, is disclosed.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: April 20, 1993
    Assignee: Ecolab Inc.
    Inventors: Stephen J. Czeck, Douglas S. Hoerning, Richard J. Mehus, Timothy A. Gutzmann, Richard O. Ruhr