Patents by Inventor Charles F. Sargent

Charles F. Sargent 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).

  • Patent number: 4360910
    Abstract: A digital voice conferencing apparatus utilizing a time division multiplex system to process data packets from and to the participants of the conference call. The subscribers and the conference call originator utilize a time division multiplex (TDM) adapter to establish a conference call mode, to identify the members thereto, and to provide all the means for transmitting and receiving the voice packets to the conference members excepting each members own voice packet. A digital voice conferencing apparatus is located at each subscriber location and permits all subscribers who may be talking simultaneously to be understood.
    Type: Grant
    Filed: July 23, 1980
    Date of Patent: November 23, 1982
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Joshua L. Segal, Charles F. Sargent