Patents by Inventor Shigeru Sembonmatsu

Shigeru Sembonmatsu 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).

  • Patent number: 6357595
    Abstract: A tray for storing a semiconductor device such as a BGA device. This tray comprises a storage portion for receiving and storing the BGA device therein. The storage portion has a wall surface which is arranged around the semiconductor device upon storing the semiconductor device. This wall surface has an area which is inclined with an angle so as to support an edge of a package of the semiconductor device but not to come into contact with wiring terminals thereof. With this arrangement, the inclined are comes into contact with only the edge of the package so as to be able to support the package.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: March 19, 2002
    Assignees: NEC Corporation, Sumitomo Chemicae
    Inventors: Shigeru Sembonmatsu, Manabu Ishikawa
  • Publication number: 20020003101
    Abstract: A tray for storing a semiconductor device such as a BGA device. This tray comprises a storage portion for receiving and storing the BGA device therein. The storage portion has a wall surface which is arranged around the semiconductor device upon storing the semiconductor device. This wall surface has an area which is inclined with an angle so as to support an edge of a package of the semiconductor device but not to come into contact with wiring terminals thereof. With this arrangement, the inclined are comes into contact with only the edge of the package so as to be able to support the package.
    Type: Application
    Filed: April 27, 2000
    Publication date: January 10, 2002
    Inventors: Shigeru Sembonmatsu, Manabu Ishikawa
  • Patent number: 6215536
    Abstract: A reflective liquid crystal display device comprises a transparent first substrate having formed thereon a transparent electrode, a first filter having a first color, and a second filte having a second color. A second substrate is disposed opposite and spaced-apart from the first substrate. A reflection layer is disposed on the second substrate. A polymer dispersed liquid crystal layer is disposed between the transparent electrode and the reflection layer and is formed by exposure to an ultraviolet ray in a preselected wavelength range. A ratio of a transmissivity of the first filter for the ultraviolet ray to a transmissivity of the second filter for the ultraviolet ray is 3.0 or less.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: April 10, 2001
    Assignees: Seiko Instruments Inc., Seiko Precision Inc.
    Inventors: Teruo Ebihara, Shunichi Motte, Kaori Takano, Shigeru Sembonmatsu, Hiroshi Sakuma, Takakazu Fukuchi, Osamu Yamazaki, Masafumi Hoshino, Naotoshi Shino, Shuhei Yamamoto, Masanori Fujita