Patents by Inventor Albert J. Schepis

Albert J. Schepis 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).

  • Locatable object suitable for underground use and methods of locating same
    Patent number: 5106175
    Abstract: An all-dielectric cable (20) or object which is destined to be buried is provided with at least one electronically resonant marker (44). After the cable or object is buried, a tradesperson may locate the cable or object by causing an electromagnetic signal (71), which comprises at least one frequency to be transmitted by a transceiver (60) and to be induced into the electronically resonant marker associated with the cable or object. A return signal (73), which is radiated by the electronically resonant marker at a frequency different from the at least frequency, is received by the transceiver. Characteristics of the return signal provide useful information for the determination of the location of the buried cable or object.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: April 21, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: Donald D. Davis, William S. Pesto, Albert J. Schepis, Loyce A. Turner