Patents by Inventor Mike S. Chu

Mike S. Chu 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).

  • Lead perovskite based ceramic compositions without any free lead oxide
    Patent number: 5461014
    Abstract: A ceramic composition which includes Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 or the oxide precursors thereof, in admixture with barium copper oxide of the formula BaCuO.sub.2 as a sinter aid therefor. The compositions do not contain any free lead oxide and have high dielectric constants, e.g. above 8000, and low loss factors, e.g. below 3%.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: October 24, 1995
    Assignee: TAM Ceramics, Inc.
    Inventors: Mike S. Chu, Daniel C. Rose, John Bultitude
  • High voltage dielectric (SRT I03)
    Patent number: 4388415
    Abstract: A ceramic dielectric composition is provided including 63.96 to 73.72 mole % SrTiO.sub.3, 17.90 to 24.04 mole % TiO.sub.2, and 8.11 to 12.00 mole % Bi.sub.2 O.sub.3 and further including 0 to 8 weight % NiO, 0 to 1.11 weight % La.sub.2 O.sub.3, 0 to 2.94 weight % SiO.sub.2 and 0 to 0.32 weight % MnO. The said weight %, where mentioned, is with respect to the total weight of the above mentioned three compounds, SrTiO.sub.3, TiO.sub.2 and Bi.sub.2 O.sub.3.These ceramic dielectric compositions have high dielectric constants and low dielectric losses (dissipation factors). Also, the variation of dielectric constant and dissipation factor with respect to temperature, applied AC voltage, and applied DC voltage are very small.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: June 14, 1983
    Assignee: Erie Technological Products, Inc.
    Inventor: Mike S. Chu