Patents by Inventor Leo Ehara

Leo Ehara 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).

  • Desalination process by improved multistage electrodialysis
    Patent number: 3933610
    Abstract: Improved multistage electrodialysis process utilizing anion and cation exchange membranes with differing coefficients of divalent ion permselectivity selected and utilized to prevent precipitation of insoluble salts in concentration stream.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: January 20, 1976
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Leo Ehara, Takafumi Miwa, Masami Kamaya