Patents by Inventor Mathew R. Johnston

Mathew R. 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).

  • Efficient high-speed electric device using low-loss materials
    Patent number: 7067950
    Abstract: The invention relates generally to an electric device, such as an electric motor, a generator, or a regenerative motor, having a wound stator core made from advanced low-loss material. In preferred embodiments, the electric device is an axial airgap-type configuration. The invention provides an electric device having a high pole count that operates at high commutating frequencies, with high efficiency and high power density. Advanced low-loss materials exploited by the present invention include amorphous metals, nanocrystalline metals, and optimized Si—Fe alloys.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: June 27, 2006
    Assignee: Light Engineering, Inc.
    Inventors: Andrew D. Hirzel, Jeffrey A. Day, Burley C. Semones, Mathew R. Johnston
  • Efficient high-speed electric device using low-loss materials
    Publication number: 20040245879
    Abstract: The invention relates generally to an electric device, such as an electric motor, a generator, or a regenerative motor, having a wound stator core made from advanced low-loss material. In preferred embodiments, the electric device is an axial airgap-type configuration. The invention provides an electric device having a high pole count that operates at high commutating frequencies, with high efficiency and high power density. Advanced low-loss materials exploited by the present invention include amorphous metals, nanocrystalline metals, and optimized Si—Fe alloys.
    Type: Application
    Filed: January 30, 2004
    Publication date: December 9, 2004
    Inventors: Andrew D. Hirzel, Jeffrey A. Day, Burley C. Semones, Mathew R. Johnston