Patents by Inventor William R. Stollenwerk

William R. Stollenwerk 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).

  • Air driven filtration system
    Patent number: 4838910
    Abstract: An air driven filtration system is disclosed. The system includes a power module housing, an air driven motor and a removable filter pack. The power module is adapted to receive an intake adapter for connecting a remote filter pack thereto which may be placed in a contaminated work area. The remote filter pack is connected to the power module by flexible ducting.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: June 13, 1989
    Assignee: Critical Systems, Inc.
    Inventors: William R. Stollenwerk, Paul A. Burns