Patents by Inventor John Nelson Daigle

John Nelson Daigle 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).

  • Anticollision protocol for reading multiple RFID tags
    Patent number: 5883582
    Abstract: A method of reading multiple RFID tags located in a field of an interrogating antenna is based on periodic transmissions from the tags with large, non-transmission intervals between transmissions. The non-transmission intervals are fixed for a given tag, but are random between tags due to manufacturing tolerances in electrical components from which the tag is constructed, such that no coordination of transmissions from the interrogating antenna is required.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: March 16, 1999
    Assignee: Checkpoint Systems, Inc.
    Inventors: John H. Bowers, John Nelson Daigle, Rade Petrovic