Patents by Inventor Takao Ikehata

Takao Ikehata 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 removing dissolved heavy metals from aqueous waste liquids
    Patent number: 4377483
    Abstract: A powder of a slag formed at the time of manufacturing steel is used to remove heavy metals contained in waste water. After the use the slag may be heated to recover the heavy metals adsorbed thereby or the used slag may be formed into solid blocks, ballast or aggregate by admixing with Portland cement or alumina cement.
    Type: Grant
    Filed: July 15, 1980
    Date of Patent: March 22, 1983
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Kasane Yamashita, Takao Ikehata, Kazuhiko Tate, Keisuke Nakahara