Patents by Inventor Nobuya Saruwatari

Nobuya Saruwatari 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).

  • Chip-type surge absorber and method for producing the same
    Patent number: 6606230
    Abstract: A chip-type surge absorber and method for producing same, wherein the chip-type surge absorber includes an insulating substrate in the shape of a rectangular parallelepiped; an insulating hermetic cap open at a bottom side thereof, for forming, together with the insulating substrate, a box-shaped hermetically sealed cavity filled with a discharge gas; terminal electrodes disposed at both ends in the hermetically sealed cavity; a pair of discharge electrodes which are formed in the hermetically sealed cavity such that a discharge gap is formed between the discharge electrodes and such that the discharge electrodes are electrically connected to corresponding terminal electrodes; and connection surfaces for increasing the connection area for the connection between the discharge electrodes and the terminal electrodes.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: August 12, 2003
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yoshihisa Sawada, Yoshiyuki Tanaka, Kouichirou Harada, Yasuhiro Shatou, Naoto Kitahara, Kazutaka Hujiwara, Takahiro Nakamoto, Heisen Ryu, Hitoshi Inaba, Nobuya Saruwatari
  • Chip-type surge absorber and method for producing the same
    Publication number: 20020167773
    Abstract: A chip-type surge absorber and method for producing same, wherein the chip-type surge absorber includes an insulating substrate in the shape of a rectangular parallelepiped; an insulating hermetic cap open at a bottom side thereof, for forming, together with the insulating substrate, a box-shaped hermetically sealed cavity filled with a discharge gas; terminal electrodes disposed at both ends in the hermetically sealed cavity; a pair of discharge electrodes which are formed in the hermetically sealed cavity such that a discharge gap is formed between the discharge electrodes and such that the discharge electrodes are electrically connected to corresponding terminal electrodes; and connection surfaces for increasing the connection area for the connection between the discharge electrodes and the terminal electrodes.
    Type: Application
    Filed: December 26, 2000
    Publication date: November 14, 2002
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Yoshihisa Sawada, Yoshiyuki Tanaka, Kouichirou Harada, Yasuhiro Shato, Naoto Kitahara, Kazutaka Hujiwara, Takahiro Nakamoto, Heisen Ryu, Hitoshi Inaba, Nobuya Saruwatari
  • Surge absorber
    Patent number: 5036420
    Abstract: A surge absorber utilizes a varistor electrically connected to a surge absorbing element. The varistor voltage and nonlinearity factor are chosen so that the varistor has a preselected voltage-current characteristic which prevents the varistor from breaking down and short circuiting and resulting in a thermal runaway.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: July 30, 1991
    Assignee: Mitsubishi Mining & Cement Co., Ltd.
    Inventors: Toru Yoshimura, Akio Uchida, Takaaki Ito, Nobuya Saruwatari