Patents by Inventor Richard Lew Davies

Richard Lew Davies 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).

  • Wireless communication system
    Patent number: 7408456
    Abstract: An RFID tag (200) and similar control/sensing unit (300) for a communications system are described. The control/sensing unit has a control element (301) having one or more states, and include an antenna (207) as well as an electrical circuit (201-206) generating a pulse control signal for controlling transmission from the antenna and varying a parameter of the pulse control signal in dependence on the state of the control element (301). Also disclosed is a receiving communication unit in the form of a base unit or system controller for such a communications system, the unit including a receiver (100) for receiving a pulsed RF signal and an electrical circuit (105-106) for detecting a parameter of the pulsed RF signal. An output circuit (107) then produces an output control signal dependent on the detected parameter of the pulsed RF signal.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: August 5, 2008
    Assignee: Tagtec Limited
    Inventors: Howard William Whitesmith, Richard Lew Davies, Andrew Jon Fell, Charles Robert Sims, Stephen Russell Taylor, Kenneth John Lang