Patents by Inventor Youji Kawami

Youji Kawami 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).

  • Actuator element
    Patent number: 5268082
    Abstract: An actuator element comprises an ion exchange membrane and a pair of electrodes attached to opposite surfaces of the ion exchange membrane; the ion exchange membrane in a water-containing state being caused to bend and/or deform by application of an electric potential difference thereacross.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: December 7, 1993
    Assignees: Agency of Industrial Science and Technology, Ministry of International Trade and Industry
    Inventors: Keiskue Oguro, Hiroyasu Takenaka, Youji Kawami
  • Method for production of positive electrode for electrolysis of water
    Patent number: 4361602
    Abstract: A positive electrode suitable for the electrolysis of water is produced by immersing a nickel electrode in an aqueous solution containing a nickel salt, a rhodium salt, and an alkyl amine borane.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: November 30, 1982
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Eiichi Torikai, Youji Kawami, Noboru Wakabayashi
  • Method of making a chemical-resistant diaphragm thereof
    Patent number: 4111866
    Abstract: A chemical-resistant diaphragm composed of a fluorine-containing polymer and potassium titanate and a method for the manufacture of said diaphragm by the steps of adding titanium oxide or titanic acid to a fluorine-containing polymer and heating the resultant mixture in the presence of potassium hydroxide.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: September 5, 1978
    Assignees: Agency of Industrial Science and Technology, Daikin Kogyo Co., Ltd.
    Inventors: Eiichi Torikai, Youji Kawami, Shinichiro Kai, Mutsusuke Namba, Shuhei Simasaki
  • Method for treating used or exhausted photographic fixing solution
    Patent number: 4073705
    Abstract: Removal of silver and reduction of COD value in used or exhausted photographic fixing solution are effectively conducted by electrolysis of reversing repeatedly polarity of positive and negative electrodes.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: February 14, 1978
    Assignee: Agency of Industrial Science & Technology
    Inventors: Eiichi Torikai, Youji Kawami