Patents by Inventor Toshizo Watanabe

Toshizo Watanabe 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).

  • Grease composition
    Patent number: 10844309
    Abstract: Provided is a grease composition for a magnet clutch of an automobile, including: a base oil; and a thickener, wherein the composition contains 5% by mass or more of a sulfur content in terms of sulfur element relative to a total mass of the composition.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: November 24, 2020
    Assignees: KYODO YUSHI CO., LTD., DENSO CORPORATION
    Inventors: Shozo Ikejima, Iwaki Hirooka, Yutaka Imai, Ryosuke Ichimura, Kazuki Isa, Yusuke Asada, Kyoji Inukai, Hiromasa Tanaka, Masashi Tobayama, Toshizo Watanabe
  • GREASE COMPOSITION
    Publication number: 20190062664
    Abstract: Provided is a grease composition for a magnet clutch of an automobile, including: a base oil; and a thickener, wherein the composition contains 5% by mass or more of a sulfur content in terms of sulfur element relative to a total mass of the composition.
    Type: Application
    Filed: July 5, 2018
    Publication date: February 28, 2019
    Applicants: Kyodo Yushi Co., Ltd., Denso Corporation
    Inventors: Shozo Ikejima, Iwaki Hirooka, Yutaka Imai, Ryosuke Ichimura, Kazuki Isa, Yusuke Asada, Kyoji Inukai, Hiromasa Tanaka, Masashi Tobayama, Toshizo Watanabe
  • Magnetic head
    Patent number: 5267113
    Abstract: There is disclosed a magnetic head which can be used for various magnetic disk drives and easily and economically fabricated. The head comprises a magnetic core consisting of a ferrite. The core is composed of two parts bonded together with a glass. A gap, a magnetic metal film, and an intermediate film are formed between the two parts of the core. The intermediate film is formed of the same glass as said glass by sputtering and has a thickness between 30 and 150 .ANG.. The metal film has a thickness between 1 and 10 .mu.m. The glass consists mainly of SiO.sub.2, for example.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: November 30, 1993
    Assignee: Minebea Co., Ltd.
    Inventors: Takeshi Matsushita, Akinobu Sano, Shigeyuki Adachi, Toshizo Watanabe