Patents by Inventor Takumi Wakamoto

Takumi Wakamoto 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 composite material and porous ceramic material
    Patent number: 5981415
    Abstract: A ceramic composite material consisting of two or more crystal phases of different components, each crystal phase having a non-regular shape, said crystal phases having three dimensional continuous structures intertwined with each other, at least one crystal phase thereof being a single crystal. Further, by removing at least one crystal phase from this ceramic composite material, there is provided a porous ceramic material consisting of at least one crystal phase and pores, said crystal phase and pores having non-regular shapes and being three dimensionally continuous and intertwined with each other.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 9, 1999
    Assignee: UBE Industries, Ltd.
    Inventors: Yoshiharu Waku, Narihito Nakagawa, Kazutoshi Shimizu, Hideki Ohtsubo, Takumi Wakamoto, Yasuhiko Kohtoku
  • Fused ceramic composite
    Patent number: 5902763
    Abstract: A novel ceramic composite of a solidified body consisting of at least two crystal phases of oxides selected from metal oxides and complex metal oxides, except for the Al.sub.2 O.sub.3 /Y.sub.3 Al.sub.5 O.sub.12 combination.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: May 11, 1999
    Assignee: Ube Industries, Inc.
    Inventors: Yoshiharu Waku, Narihito Nakagawa, Hideki Ohtsubo, Takumi Wakamoto, Kazutoshi Shimizu, Yasuhiko Kohtoku