Patents by Inventor James J. Killigrew

James J. Killigrew 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).

  • Method for reclaiming unused system resources
    Patent number: 5349342
    Abstract: In a network of communication systems, a communication resource allocator of any of the communication systems may reclaim system resources from inactive communication systems. This may be accomplished by having the communication resource allocator transmit at least one polling message to the communication unit to determine whether the communication unit is in need of the at least one system resource. If the communication unit does not respond to the polling message, the communication resource allocator determines whether the communication unit is inactive. If the communication unit is inactive, the communication resource allocator reclaims the at least one system resource from the communication unit.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: September 20, 1994
    Assignee: Motorola, Inc.
    Inventors: Robert B. Nilles, Craig J. Collins, James J. Killigrew, Michael D. Sasuta