Patents by Inventor Thomas J. Karbowski

Thomas J. Karbowski 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).

  • Secondary ID usage in a subfleet call
    Patent number: 5293644
    Abstract: A communications system provides subfleet calls for both voice and data communications using a secondary identification (301, 303, 305, 307, 309) incorporating a plurality of subfleets in a hierarchical arrangement. A message including the secondary identification (301, 303, 305, 307, 309) is transmitted to a communication unit (117) having a stored secondary identification (301, 303, 305, 307, 309). If the transmitted secondary identification sufficiently matches the stored secondary identification, the communication unit (117) responds to the instructions in the transmitted message.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: March 8, 1994
    Assignee: Motorola, Inc.
    Inventors: Kevin P. Barry, Thomas J. Karbowski, Russell J. Lund, Glenn K. Lubin, Steven Horvath