Patents by Inventor Eiji Isojima

Eiji Isojima 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).

  • Moisture-absorbent compositions and molded items
    Patent number: 5078909
    Abstract: A moisture-absorbent composition contains 100 parts by weight of thermoplastic resin and 5 to 400 parts by weight of at least one among the group consisting of magnesium sulfate (represented generally by MgSO.sub.4.NH.sub.2 O (O.ltoreq.n.ltoreq.3), aluminum oxide, calcium oxide, silicon oxide, zeolite, barium oxide, and cobalt chloride. A moisture-absorbent molded item is formed of this composition in a shape of a film, a sheet, a plate, a bag, a pellet, or a container. The molded item may be used as a cushion insert, etc. which requires moisture absorption properties. A moisture-absorbent composition and an molded item made of the composition are provided with an indicator function, by specifying the amount of anhydrous cobalt chloride.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: January 7, 1992
    Assignees: Sasaki Chemicals Co., Ltd., Tomita Pharmaceutical
    Inventors: Katsumi Shigeta, Hisao Mukai, Eiji Isojima, Yoshio Saita