Patents by Inventor Milton J. Greif

Milton J. Greif 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).

  • Three phase transformer with reduced harmonic currents
    Patent number: 5537089
    Abstract: A transformer comprising a core, a plurality of primary coils and a plurality of secondary coils, the core having three sections arranged in a generally triangular configuration forming three vertices, the coils being disposed on the core about respective vertices, each of the core sections having at least one mitered side abutting a mitered side of an adjacent core section.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: July 16, 1996
    Assignee: Parker-Hannifin Corporation
    Inventors: Milton J. Greif, Curtis E. Stevens