Patents by Inventor Yoshihiko Tujimura

Yoshihiko Tujimura 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).

  • Circuit substrate
    Publication number: 20020037435
    Abstract: A circuit substrate which has a ceramic substrate and an Al circuit comprising Al or an Al alloy bonded to said ceramic substrate via a layer comprising Al and Cu.
    Type: Application
    Filed: July 24, 2001
    Publication date: March 28, 2002
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Yutaka Hirashima, Yoshitaka Taniguchi, Yasuhito Hushii, Yoshihiko Tujimura, Katsunori Terano, Takeshi Gotoh, Syoji Takakura, Nobuyuki Yoshino, Isao Sugimoto, Akira Miyai
  • Circuit substrate
    Patent number: 6309737
    Abstract: A circuit substrate which has a ceramic substrate and an Al circuit comprising Al or an Al alloy bonded to said ceramic substrate via a layer comprising Al and Cu.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: October 30, 2001
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yutaka Hirashima, Yoshitaka Taniguchi, Yasuhito Hushii, Yoshihiko Tujimura, Katsunori Terano, Takeshi Gotoh, Syoji Takakura, Nobuyuki Yoshino, Isao Sugimoto, Akira Miyai