Patents by Inventor Tokuo Yoshimura

Tokuo Yoshimura 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).

  • Polyamide resin composition
    Patent number: 4528304
    Abstract: A polyamide resin composition which comprises 20 to 80 wt % of polyamide resin and 80 to 20 wt % of inorganic fibers, 85 to 15 wt % of said inorganic fiber being glass fiber and remaining 15 to 85 wt % being ground mineral fiber having an aspect ratio of 5 to 100. The composition has high strength and high modulus of elasticity and is suitable for molding. The composition provides moldings having good surfaces.
    Type: Grant
    Filed: December 1, 1983
    Date of Patent: July 9, 1985
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Tokuo Yoshimura, Kunio Hagiwara, Akira Aiba
  • Method for treating a water-containing waste oil
    Patent number: 4336129
    Abstract: A method for treating a water-containing waste oil comprising oils, water and solid constituents and forming a water-in-oil emulsion, which comprises adding to the water-containing waste oil having an aromatic oil ratio A as represented by the following formula: ##EQU1## at least 1% by weight, on the basis of the weight of the water-containing waste oil, of a treating oil having an aromatic oil ratio B(.vertline.A-B.vertline.>0.5 and excluding 0.4.ltoreq.B.ltoreq.0.6) thereby to separate the oil content.
    Type: Grant
    Filed: March 4, 1980
    Date of Patent: June 22, 1982
    Assignees: Nippon Steel Chemical Co., Ltd., Shinnikka Environmental Engineering Co., Ltd.
    Inventors: Tokuo Yoshimura, Hiroshi Okazaki, Mahito Soeda, Takeharu Yushima