Patents by Inventor Kuniko Ando

Kuniko Ando 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 porous body having a continuous particle size distribution
    Patent number: 5762841
    Abstract: A ceramic porous body is constituted of ceramic particles which have a substantially continuous, monotonic size distribution in the thickness direction of the porous body.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: June 9, 1998
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Shunzo Shimai, Koichi Imura, Kenichi Okamoto, Koichi Shiraishi, Kuniko Ando
  • Silica glass filter
    Patent number: 5089134
    Abstract: A silica glass filter comprises a porous support body composed of amorphous silica particles as a porous sintered body and having a purity of 99.9% or more and containing 150 ppm or less in total of impurities including alkali, alkali metal, heavy metal and/or elements of III B group, and a filtration layer formed on the support body. The filtration layer is composed of amorphous silica particles as a porous sintered body in a fine mode and has substantially the same purity as that of the support body.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: February 18, 1992
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Kuniko Ando, Koichi Shiraishi, Masaru Shimbo, Shunzo Shimai