Patents by Inventor Toshiaki Fujishiro

Toshiaki Fujishiro 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 material of low thermal expansion coefficient and method of manufacturing the same
    Patent number: 4105456
    Abstract: A process for producing ceramics to be used as substrates and packages of semiconductor devices, which having a thermal expansion coefficient close to that of silicon used as chip or wafer material of large scale integrations and a mechanical strength and thermal conductivity equal to those of alumina, wherein zircon and clays such as kaolin, ball clay and the like and an additive of one of Li.sub.2 O, TiO.sub.2 and ZnO and another of CoO, Co.sub.2 O.sub.3, Co.sub.3 O.sub.4 and MgO are mixed, molded and fired.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: August 8, 1978
    Assignees: Nippon Telegraph & Telephone Public Corporation, Nippon Tsushin Kogyo Kabushiki Kaisha
    Inventors: Toshiaki Murakami, Shigeru Waku, Akira Demura, Toshiaki Fujishiro