Patents by Inventor Lee-jon Choy

Lee-jon Choy 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).

  • Apparatus and method for perceiving or absence of a cover for a container and for determining a quality of food in the container in a microwave oven
    Patent number: 5773800
    Abstract: An apparatus and method for detecting the presence or absence of a container cover and for determining how much food is present in a microwave oven. The apparatus includes a sensor for sensing the state of an exhaust from the heating chamber in the microwave oven, and a sensor output processor for processing a signal from the sensor, calculating cooking information according to the signal, and identifying the presence or absence of a container cover and determining how much food is present by utilizing the cooking information and inputted cooking time information to provide a control signal for controlling a heating time of said heating chamber.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: June 30, 1998
    Assignee: LG Electronics Inc.
    Inventor: Lee-jon Choy