Patents by Inventor Akiko Niizuma

Akiko Niizuma 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).

  • Multi-layered ceramic porous body
    Patent number: 5834108
    Abstract: A ceramic porous body has a layered structure including a plurality of foam-like ceramic layers. The foam-like ceramic layers are formed by firing foam-like ceramic shaped layers each having a thickness of not more than 5 mm. The adjacent shaped layers are joined directly, or bonded via a thin foam-like ceramic layer or dense ceramic layer.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: November 10, 1998
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Shunzo Shimai, Koichi Imura, Ichiro Shibata, Kenichi Okamoto, Akiko Niizuma, Tadayoshi Muto