Patents by Inventor Kunio Fijiwara

Kunio Fijiwara 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).

  • Acidic gas adsorber having a metal phthalocyanine on an ion exchanger
    Patent number: 4980335
    Abstract: An absorber is capable of selective adsorption and removal of acidic gases of sulfur oxides, nitrogen oxides, chlorine compounds and sulfur-containing compounds such as hydrogen sulfide, as well as organic acid gases. The absorber is characterized by having a metal phthalocyanine supported on an ion exchanger, wherein the ion exchanger has a quarternary ammonium group as an ion-exchange group and the metal phthalocyanine contains iron phthalocyanine in an amount of 0.05-30 wt % of the ion exchanger.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: December 25, 1990
    Assignees: Japan Atomic Energy Research Institute, Ebara Corporation
    Inventors: Takanobu Sugo, Jiro Okamoto, Kunio Fijiwara, Hideaki Sekiguchi, Toshiaki Fujii