Patents by Inventor Shozo Iwasa

Shozo Iwasa 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).

  • Adsorbent process for heavy metals
    Patent number: 3935098
    Abstract: An adsorbent process for heavy metals or heavy metallic compounds, which comprises utilizing a resin prepared by a reaction between aldehydes, dithiocarbamate compounds and aromatic compounds having at least one radical selected from the group consisting of --OH, --SH, --COOH and --COOMe (wherein Me represents sodium, potasium, NH.sub.4 or calcium).
    Type: Grant
    Filed: June 28, 1973
    Date of Patent: January 27, 1976
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Nakaaki Oda, Yoshio Horie, Mitsuru Idohara, Shozo Iwasa