Patents by Inventor Jong H. Im

Jong H. Im 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).

  • Magnetron for a microwave oven having a pair of choke coils wound around a core in the same directions
    Patent number: 5184045
    Abstract: A magnetron for a microwave includes a pair of choke coils wound around only one core in same direction thereby forming a unique type choke coil. Ends of the unique type choke coil are connected among a lead-through capacitor, a center lead and a peripheral lead respectively so that the filter circuit includes jointly the unique choke coil. As a result, the magnetron can eliminate radio frequency noise, reduce the heating caused from a power supply, and reduce the volume of the filter box.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: February 2, 1993
    Assignee: Goldstar Co., Ltd.
    Inventor: Jong H. Im