Patents by Inventor Shotaro Kiga

Shotaro Kiga 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 of preparing asbestos diaphragms for electrolysis cell
    Patent number: 4208246
    Abstract: Diaphragms of deposited asbestos which are consolidated by a polymer are prepared by the steps of dispersing a polymer emulsion into asbestos fibers dispersed in an aqueous solution of a cellulose ether or a high molecular weight polyether polyol, depositing the asbestos fiber slurry on a metal screen cathode by means of filtration, and drying the deposited asbestos fibers. The asbestos fibers are deposited evenly on a cathode of commercial size and the diaphragms are consolidated satisfactorily by the polymer.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: June 17, 1980
    Assignee: Nippon Soda Company Limited
    Inventors: Shotaro Kiga, Naoshi Yoshida, Kenichi Edahiro, Tadashi Sakata
  • Diaphragm process electrolytic cell
    Patent number: 3989615
    Abstract: A high electrodensity chloro-alkali electrolytic diaphragm cell, wherein the diaphragm comprises a layer mixture of asbestos fibers and from 1 to 30 percent by weight of carbon fibers.
    Type: Grant
    Filed: August 20, 1973
    Date of Patent: November 2, 1976
    Assignee: Nippon Soda Company Limited
    Inventors: Shotaro Kiga, Shozo Chiba, Kenichi Edahiro, Naoshi Yoshida, Masuo Nagasawa