Patents by Inventor Sian S. Lie

Sian S. Lie 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).

  • Electric vehicle motor
    Patent number: 5682074
    Abstract: An electric motor for an electrically powered vehicle provides the power necessary for rotating a plurality of vehicle wheels. The motor is constructed of light weight and corrosion resistant metals and includes a cooling system for supplying cooling oil to the rotor and stator core and stator windings such that high speed operation of larger electric motors for electric cars and buses is achievable.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: October 28, 1997
    Assignee: Northrop Grumman Corporation
    Inventors: Carlo C. Di Pietro, Sian S. Lie, Nagwa Elkasabgy