Patents by Inventor Kouji Kobayashi

Kouji Kobayashi 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).

  • Method and apparatus for inspecting printed circuit board
    Patent number: 4758782
    Abstract: Method and apparatus for inspecting a printed circuit board wherein scanned image data are digitized and analyzed according to a feature extraction method and a mutual comparison method. The result of both of the analysis methods is combined with predetermined conditions to control output devices including a CRT display or a marking device. The two complementary methods compensate each others drawbacks so that the reliability of inspection can be improved.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: July 19, 1988
    Assignee: Kowa Company Ltd.
    Inventor: Kouji Kobayashi
  • Magnetic recording medium
    Patent number: 4594296
    Abstract: A magnetic recording medium which comprises a magnetic layer formed on a substrate and comprising Co, or Co and one to three elements selected from the group consisting of Ni, Cr and O, wherein, when the magnetic layer is divided equally into four portions in the direction of the thickness of the magnetic layer, the density of the portion located farthest from the substrate is greater by at least 20% than the average density of three other portions.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: June 10, 1986
    Assignee: TDK Corporation
    Inventors: Kiyoshi Noguchi, Kouji Kobayashi, Suguru Takayama
  • Magnetic recording medium
    Patent number: 4550062
    Abstract: A magnetic recording medium which comprises a first layer formed on a substrate and comprising Co; Co and Ni; Co and O; or Co, Ni and O, and a second magnetic layer formed on the first magnetic layer and comprising Co and Cr at a weight ratio of Co/Cr being from 2.5 to 8.
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: October 29, 1985
    Assignee: TDK Corporation
    Inventors: Suguru Takayama, Kiyoshi Noguchi, Kouji Kobayashi
  • Magnetic recording medium
    Patent number: 4548871
    Abstract: A magnetic recording medium which comprises a magnetic layer formed on a substrate and comprising Co, or Co and one to three elements selected from the group consisting of Ni, Cr and O, said magnetic layer comprising sequentially from the substrate side, a first portion composed of crystal particles which are not inclined relative to the normal line of the principal plane of the substrate, a second portion composed of columnar crystal particles which are inclined relative to the normal line of the principal plane of the substrate, and a third portion composed of crystal particles which are not inclined relative to the normal line of the principal plane of the substrate.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: October 22, 1985
    Assignee: TDK Corporation
    Inventors: Kouji Kobayashi, Kiyoshi Noguchi, Suguru Takayama
  • Lock-up clutch for a hydraulic unit
    Patent number: 4274519
    Abstract: A lock-up clutch having high durability and high reliability of operation is provided in the present invention.
    Type: Grant
    Filed: April 19, 1979
    Date of Patent: June 23, 1981
    Assignee: Aisin-Warner K.K.
    Inventors: Shuzo Moroto, Kouji Kobayashi
  • Lock-up clutch for a hydraulic unit
    Patent number: RE31621
    Abstract: A lock-up clutch having high durability and high reliability of operation is provided in the present invention.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: July 3, 1984
    Inventors: Shuzo Moroto, Kouji Kobayashi