Patents by Inventor Angela T. Johnston

Angela T. Johnston 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).

  • Channel allocation mechanism
    Patent number: 5420574
    Abstract: A channel allocation mechanism especially useful in a trunked communication system that can accommodate both voice and data signals, and that operates in true trunked manner to efficiently utilize spectral resources.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: May 30, 1995
    Assignee: Motorola, Inc.
    Inventors: Paul M. Erickson, Leopold Alonso, Timothy J. Wilson, Angela T. Johnston