Patents by Inventor Syoichi Saito

Syoichi Saito 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).

  • Low-permittivity glass fibers
    Patent number: 5958808
    Abstract: The low-dielectric-constant glass fiber of the present invention contains by weight, as a glass composition, 50 to 60% of SiO.sub.2, 10 to 20% of Al.sub.2 O.sub.3, 20 to 30% of B.sub.2 O.sub.3, 0 to 5% of CaO, 0 to 4% of MgO, 0 to 0.5% of Li.sub.2 O+Na.sub.2 O+K.sub.2 O and 0.5 to 5% of TiO.sub.2, and is preferably used as glass for printed wiring boards.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: September 28, 1999
    Assignees: Nitto Boseki Co., Ltd, Nitto Glass Fiber Mfg. Co., Ltd.
    Inventors: Masahiro Mori, Shinichi Tamura, Syoichi Saito, Kenzo Watabe, Tatsuo Inada, Masahiro Yamamoto
  • Pencil sharpener
    Patent number: 4054164
    Abstract: A pencil sharpener of a rotary type including a rotary blade having spiral cutting edges and a blade holder, wherein the rotary blades makes a rotation around its own axis while making a revolution around a rotational axis of the assembly of the rotary blade and the blade holder by a cooperation of a pinion carried by the rotary blade and a fixed annular internal gear, wherein a cover means is provided to isolate the meshing region of the pinion and the annular internal gear from the shaving region effected by the spiral cutting edges.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: October 18, 1977
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Ryoji Kose, Syoichi Saito, Masahito Ogiwara