Patents by Inventor Walter James Budzyna

Walter James Budzyna 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).

  • Distance determination and alarm system
    Patent number: 5661460
    Abstract: A system has a plurality of transceiver units, including a parent unit and one or more portable and wearable child units, for generating an alarm when a child transceiver unit is more than a predetermined distance away from a parent transceiver unit. The distance is determined by the difference in the phase of a reference signal from the time it is transmitted on an rf signal by a parent unit, received and retransmitted by a child unit, and then received again by the parent unit.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: August 26, 1997
    Assignee: Secure Technologies, Inc.
    Inventors: Roy Sallen, Walter James Budzyna, Charles E. Sawabini, Drew E. Sunstein