Patents by Inventor Masahhiro Watanabe

Masahhiro 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).

  • Ion exchange resins with decreased resistance to ionic conductivity
    Patent number: 5539002
    Abstract: Disclosed is a process of preparing an ion exchange membrane which comprises adding a highly hydrophilic solvent into a solution of an ion exchange resin containing an ion exchange group on the polymer chain, placing the solution into a membrane-forming vessel and forming a membrane by removing the solvent.The ion exchange membrane prepared in accordance with the present invention exhibits the high degree of orientation so that the ionic conductivity can be elevated to provide the satisfactory cell performance.
    Type: Grant
    Filed: April 20, 1994
    Date of Patent: July 23, 1996
    Assignees: Tanaka Kikinzoku Kogyo K.K., Masahiro Watanabe, Stonehart Associates Inc.
    Inventor: Masahhiro Watanabe