Patents by Inventor Geun C. Yum

Geun C. Yum 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).

  • Oxygen sensor probe for boiler
    Patent number: 5585547
    Abstract: An oxygen sensor probe for a boiler including a U-shaped zirconia element that is to be brought in contact with an exhaust gas in the interior of a cylindrical probe body attached to a plug and arranged together with a thermocouple in the longitudinal direction of the body. A heater for heating the element is provided around the periphery of the element and a protective filter is provided on the top portion of the body. The probe is characterized by the U-shaped zirconia element 11 being located at an upper end of the probe body 12 with its concave open portion 11' facing upwards to be contacted with the exhaust gas while its convex closed portion 11" faces downward to be confronted with the thermocouple 16.
    Type: Grant
    Filed: January 5, 1995
    Date of Patent: December 17, 1996
    Assignee: Ssangyong Cement Industrial Co., Ltd.
    Inventors: Ki S. Kim, Han S. Song, Geun C. Yum, Dae J. Ko