Patents by Inventor Kazuyuki Hiruta

Kazuyuki Hiruta 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).

  • Silicon carbide composite, method for producing it and heat dissipation device employing it
    Patent number: 6447894
    Abstract: A silicon carbide composite which is a flat composite comprising a porous preform of silicon carbide and a metal containing aluminum as the main component, infiltrated into the porous preform, said composite having a warpage of at most 250 &mgr;m per 10 cm of the principal plane length of the composite.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: September 10, 2002
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideki Hirotsuru, Kenji Nomura, Ryuichi Terasaki, Mitsuaki Saito, Kazuyuki Hiruta, Akira Miyai
  • Method for forming a ceramic circuit board
    Patent number: 5354415
    Abstract: Method for forming a ceramic circuit board by forming a metal circuit pattern on a ceramic board through an active metal ingredient-containing brazing material and removing an unnecessary part of the brazing material by chemical liquor treatment.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: October 11, 1994
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuhito Fushii, Miyuki Nakamura, Yukihiko Nakajima, Kazuo Kato, Akira Miyai, Kazuyuki Hiruta