Patents by Inventor Takeharu Yushima

Takeharu Yushima 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).

  • 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