Patents by Inventor Helmut Euler

Helmut Euler 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).

  • Two-way ranging system
    Patent number: 4677441
    Abstract: A two-way ranging system in which deviations of transmit times of interrogation signals from a nominal transit time are determined at a transponder. These deviations are dependent upon the propagation conditions for interrogation and reply signals in the medium of propagation. A normally fixed delay is developed in the transponder. This fixed delay occurs between the reception of an interrogation signal and the transmission of a reply signal. This fixed delay is so shortened as to compensate for transit time deviations of the interrogation and reply signals.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: June 30, 1987
    Assignee: International Standard Electric Corporation
    Inventors: Gunter Hofgen, Helmut Euler