Patents by Inventor Ken Yasukuni

Ken Yasukuni 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 and apparatus having reverse osmosis membrane for concentrating solution
    Patent number: 5238574
    Abstract: A method and an apparatus for treating salt water by a multiplicity of reverse osmosis membrane modules or a structure constituted by combining a multiplicity of reverse osmosis membrane modules and an evaporating device and thereby capable of efficiently treating it while preventing excessively large energy consumption. Salt water is passed through a plurality of reverse osmosis membrane modules so as to be separated into desalted water of a potable water level and high density concentrated water the salinity quality of which is 80,000 to 120,000 ppm.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: August 24, 1993
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Norihiro Kawashima, Ken Yasukuni, Koichi Tada, Naoki Masa