Patents by Inventor Shoosaku Ishihara

Shoosaku Ishihara 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).

  • Ceramic wiring boards
    Patent number: 4465727
    Abstract: A ceramic wiring board which comprises ceramic part in which through-holes are made, sintered wiring pattern part provided on the surface of said ceramic part and sintered conductor part filled in said through-holes shows much decrease in cracks at the through-hole part caused by sintering and remarkable reduction in moisture absorbency when the ceramic part comprises ceramic containing a sintering assistant and the sintered conductor part comprises a metal containing the same sintering assistant as that present in said ceramic part.
    Type: Grant
    Filed: May 4, 1982
    Date of Patent: August 14, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Tsuyoshi Fujita, Noriyuki Taguchi, Gyozo Toda, Takashi Kuroki, Shoosaku Ishihara