Patents by Inventor Toshikazu Kotani

Toshikazu Kotani 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).

  • Magnesium hydroxide solid solutions, their production method and use
    Patent number: 5891945
    Abstract: A production method of a magnesium hydroxide solid solution, Mg.sub.1-x M.sup.2+ .sub.x (OH).sub.2 or a resin and/or rubber material having as its effective elements containing said solid solution as its flame retardant, characterized by having M.sup.2+ distributed unevenly in a high concentration in the vicinity of the surface of each crystal, in the magnesium solid represented by the formula Mg.sub.1-x M.sup.2+ .sub.x (OH).sub.2 wherein M.sup.2+ is at least one divalent metal ion selected from the group consisting of Mn.sup.2+, Fe.sup.2+, Ni.sup.2+, Cu.sup.2+, Zn.sup.2+ and x indicates a range of 0.001.ltoreq.x<0.5.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: April 6, 1999
    Assignee: Tateho Chemical Industries, Co., Ltd.
    Inventors: Shigeo Miyata, Mitsuru Koresawa, Yasunori Kitano, Hirofumi Kurisu, Toshikazu Kotani, Kiminari Tottotsu
  • Flame retardant polyolefin compound having low smoking and toxicity
    Patent number: 5654356
    Abstract: A flame retardant polyolefin composition comprising polofin resin and a flame-retarding component which is prepared by adding 1 to 20 parts by weight of fine carbon powder to 100 parts by weight of composite metal hydroxide expressed by the general formula Mg.sub.1-x M.sup.+2.sub.x (OH).sub.2 in which M.sup.+2 is at least one element selected from the group consisting of bivalent metallic ions Mn.sup.+2, Fe.sup.+2, Co.sup.+2, Ni.sup.+2, Cu.sup.+2 and Zn.sup.+2, and x has a value satisfying 0.001.ltoreq.x.ltoreq.0.9.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: August 5, 1997
    Assignee: Tateho Chemical Industries Co., Ltd.
    Inventors: Yukihiko Namiki, Yasushi Kato, Yasunori Kitano, Hirofumi Kurisu, Toshikazu Kotani, Yoshiaki Yokota