Patents by Inventor Kent V. Mina

Kent V. Mina 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).

  • Multifrequency tone distribution using a conferencing arrangement
    Patent number: 4535454
    Abstract: There is disclosed a multifrequency tone distribution arrangement for a communication system having a common time division multiplexed bus in which digital samples of tone frequencies are supplied from a central signal generating circuit to system port circuits via selected time slots. Each port circuit automatically accepts selected signals from the common bus for conferencing to produce multifrequency digit tones and service tones.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: August 13, 1985
    Assignee: AT&T Information Systems Inc.
    Inventors: Clair A. Buzzard, Kent V. Mina