Patents by Inventor Tadashi Matsunami

Tadashi Matsunami 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).

  • Fibrous anhydrous magnesium oxysulfate and process for the preparation thereof
    Patent number: 5326548
    Abstract: A fibrous anhydrous magnesium oxysulfate having a rational formula of MgSO.sub.4.5Mg(OH).sub.2 has an excellent oil absorptivity and appropriate hygroscopicity. The fibrous anhydrous magnesium oxysulfate is prepared by a process comprising cooling and diluting, with water or an aqueous solution of magnesium sulfate, a slurry of magnesium oxysulfate having a rational formula of 2MgSO.sub.4.Mg(OH).sub.2.3H.sub.2 O, obtained by dispersing magnesium hydroxide or magnesium oxide into an aqueous solution of magnesium sulfate, and then subjecting the dispersion to hydrothermal reaction, to thereby decompose the 2MgSO.sub.4.Mg(OH).sub.2.3H.sub.2 O and produce fibrous magnesium oxysulfate having a rational formula of MgSO.sub.4.5Mg(OH).sub.2.8H.sub.2), and then heat-treating the fibrous magnesium oxysulfate having the rational formula of MgSO.sub.4.5Mg(OH).sub.2.8H.sub.2 O.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: July 5, 1994
    Assignee: Ube Industries, Ltd.
    Inventors: Satoshi Otaka, Tadashi Matsunami, Yukio Tasaka
  • Thermoplastic resin composition containing fibrous magnesium oxysulfate and boric acid
    Patent number: 5137958
    Abstract: A thermoplastic resin composition of a thermoplastic resin and a fibrous magnesium oxysulfate is made to be resistant to coloring by incorporation of a boric acid or boric acid anhydride.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: August 11, 1992
    Assignee: Ube Industries, Ltd.
    Inventors: Tadashi Matsunami, Yukio Tasaka, Kazuo Tsuchiya, Kouji Matsumoto