Patents by Inventor Kazuya Ohsawa

Kazuya Ohsawa 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).

  • Infrared transmitting optical wave guide
    Patent number: 4445755
    Abstract: Fluorozirconate glasses containing sodium fluoride and aluminum fluoride are used to improve an infrared transmitting fluoride glass optical wave guides thereby to obtain optical wave guides having high numerical aperture.
    Type: Grant
    Filed: March 16, 1982
    Date of Patent: May 1, 1984
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Kazuya Ohsawa, Toshiaki Shibata, Kenichi Takahashi
  • Rechargeable galvanic cell
    Patent number: 3930882
    Abstract: A rechargeable galvanic cell which comprises a zinc anode, a cathode and an electrolyte wherein the electrolyte comprises an aqueous alkaline solution containing alkali metal zincate and a polycation in an amount sufficient to suppress the formation of zinc dendrites on the surface of the zinc anode during cell charge.
    Type: Grant
    Filed: January 25, 1974
    Date of Patent: January 6, 1976
    Assignees: The Furukawa Electric Co., Ltd., The Furukawa Battery Co., Ltd.
    Inventors: Kazuya Ohsawa, Katsuyoshi Hirasa, Hideo Kinoshita