Patents by Inventor Seoyong Cho

Seoyong Cho 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).

  • Dielectric ceramic compositions
    Patent number: 6242375
    Abstract: Dielectric ceramic compositions for microwave application which are expressed as (1-x)ZnNb2O6- xTiO2 and designed with mole fractions of TiO2 (x=0.2 to 0.8). CuO of 0.5 to 12.0 % by weight of the total weight of the compositions is added to the compositions. At least one additive oxide of 0.05 to 5.0% by weight of the total weight among V2O5, Sb2O5, Bi2O3, B2O3, NiO, WO3, AgNO3, ZnO, and MgO is added to the compositions. They have good sintering and dielectric characteristics and made through simple manufacturing processes, and lower the production costs.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: June 5, 2001
    Assignee: Amecs Co., Ltd.
    Inventors: Kugsun Hong, Hyukjoon Yoon, Sooncheun Byun, Seoyong Cho, Dongwan Kim, Taeguen Kim, Deukyang Kim, Jongwoon Moon, Hyojong Lee, Byungkyu Kim