Patents by Inventor John J. Coultherd

John J. Coultherd 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).

  • Object identification system with adaptive transceivers and methods of operation
    Publication number: 20020011932
    Abstract: An object identification system includes a monitor and a plurality of transceivers that communicate over a common medium. The monitor includes a first transmitter, a first receiver, and a processor. Each transceiver includes a resonant circuit, a transmitter, a receiver, and an antenna coupled to the resonant circuit. The processor performs a method for performing transceiver communication that includes the steps of: (a) transmitting from the first transmitter a first frequency for a first duration; (b) after lapse of the first duration, receiving via the first receiver a response signal from at least one of the resonant circuits; (c) determining a second frequency from the received response signal; and (d) performing transceiver communication using the second frequency.
    Type: Application
    Filed: August 3, 2001
    Publication date: January 31, 2002
    Applicant: RF Code, Inc.
    Inventors: James L. Rodgers, John J. Coultherd, Billy C. Fowler, Howard K. Jaecks, Roc A. Lastinger, Paul A. Picard, Mohammad A. Rehman