Patents by Inventor Don R. Gaiser

Don R. Gaiser 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).

  • Breath alcohol testing system
    Patent number: 4996161
    Abstract: A breath alcohol testing system for advantageous use in unsupervised blood alcohol testing includes a face mask having for receiving a breath sample, components to confirm the identity and components to insure that this identity act and breath delivery are performed by the same person. The system requires that the face mask continuously engage the face of the subject between identity confirmation and breath delivery. By making the continuing physical presence of a subject an operative link in the system during both identity confirmation and breath delivery, the integrity of unsupervised testing is greatly enhanced.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: February 26, 1991
    Assignee: Guardian Technologies, Inc.
    Inventors: Patrick J. Conners, Lawrence R. Stevens, Don R. Gaiser, Frank C. Pennypacker