Patents by Inventor Jeon K. Lee

Jeon K. Lee 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).

  • Metal oxide group thermistor material
    Patent number: 5246628
    Abstract: Metal oxide group NTC theremistor material made from MnCO.sub.3 +NiO+CuO+Co.sub.3 O.sub.4 +FeO.sub.3 TiO.sub.2 group as a basic composition. The invention is characterized by metal oxide group thermistor material made from MnCO.sub.3 +NiO+ZnO+Co.sub.3 O.sub.4 +Fe.sub.2 O.sub.3 +TiO.sub.2 group or MnCO.sub.3 +NiO+CuO+ZnO+Fe.sub.2 O.sub.3 +TiO.sub.2 group as a basic composition having respectively composition amounts by weight for each ingredient described in the text. According to the invention, the sintering temperature of the material can be reduced relative to the conventional material, and therefore there is advantage that manufacturing expense of the thermistor can be reduced.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: September 21, 1993
    Assignee: Korea Institute of Science & Technology
    Inventors: Hyung J. Jung, Sang O. Yoon, Ki Y. Hong, Jeon K. Lee