Patents by Inventor Fredrick L. Bauer

Fredrick L. Bauer 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).

  • Method and system for detecting object presence and its duration in a given area
    Patent number: 6915135
    Abstract: A system (10) for determining a presence, identity, and duration of presence in a given area of an object includes one or more mobile transmitters (12) that periodically send out a beacon signal. A node (14) includes a receiver (16) that receives a beacon signal whenever a mobile transmitter (12) is within a threshold range of the node (14). The node (14) includes a controller (18) that determines a signal strength of each received beacon signal. The controller (18) compares the signal strength of each received beacon signal to a reference signal strength associated with the threshold range in order to determine whether the mobile transmitter (12) was within the desired detection area of the node (14). A base unit (24) sorts received information packets for processing by a base computer (28) in order to determine what mobile transmitter (12) was at what node (14) and for how long.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: July 5, 2005
    Assignee: Praxis Technology Group, Inc.
    Inventors: Philip R. McKee, Eric J. Moeller, Fredrick L. Bauer