Patents by Inventor Nobuo Yoshii

Nobuo Yoshii 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).

  • Apparatus for granulating coal
    Patent number: 4401278
    Abstract: A granulating apparatus comprising a stirring tank or a duct for containing a slurry of particulate to granular coal having a binder incorporated therein, a rotary shaft disposed in the tank or duct and at least one agitating blade made of metal netting and attached to the rotary shaft.
    Type: Grant
    Filed: March 24, 1981
    Date of Patent: August 30, 1983
    Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.
    Inventors: Etsuo Ogino, Nobuo Yoshii, Kazuo Harada
  • Process for recovering fine coal particles from slurry of finely divided coal
    Patent number: 4346010
    Abstract: Fine coal particles are recovered from a slurry of finely divided coal by mixing coarsely divided coal and a binder together to cause the binder to adhere to the surfaces of the coarsely divided coal pieces, mixing the slurry with the coal pieces having the binder adhered thereto to cause fine coal particles to adhere to the binder over the surfaces of the coal pieces serving as nuclei and thereby form agglomerates, and separating the agglomerates from the remaining slurry portion to recover the fine coal particles along with the coarsely divided coal and the binder.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: August 24, 1982
    Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.
    Inventors: Etsuo Ogino, Nobuo Yoshii, Kazuo Harada