Patents Assigned to O.K. Trading Co., Ltd.
  • Patent number: 5098700
    Abstract: A far infrared ray emitting, odor-absorbing material is disclosed. The material comprises cellulose acetate fiber having adhered thereto an ultrafine powder of alumina hydrate or silica hydrate which is chemically produced in an aqueous dispersion of the cellulose acetate fiber. The material possesses a high far infrared ray emitting, odor-absorbing capability as well as many characteristics inherently possessed by cellulose acetate fibers, and can expand the utility of cellulose acetate in such fields as sanitary, health-care, and medical fields.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: March 24, 1992
    Assignee: O.K. Trading Co., Ltd.
    Inventors: Hirotaka Nakai, Setsuji Edagawa
  • Patent number: 4886972
    Abstract: A far infrared ray emitting body is disclosed. The body comprises a core material having an ultrafine powder of one or more compounds selected from alumina hydrate, silica hydrate, alumina, silica, and silicate adhered on said core material. This material as itself or combined with other substances can provide far infrared radiation to various objects to effect excitation vibration of water molecules in the objects.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: December 12, 1989
    Assignee: O.K. Trading Co., Ltd.
    Inventors: Hirotaka Nakai, Setsuji Edagawa