Patents by Inventor Kanzaburo Sutou

Kanzaburo Sutou 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 and apparatus for grinding material particles
    Patent number: 5529248
    Abstract: A grinding apparatus includes a roller mill in which material particles are pre-ground, a tube mill connected to the roller mill through a fluidized-bed-type classifying device in which the material particles are classified by size and a circulation line is connected between the classifying device and the roller mill, wherein a fluidized portion of the pre-ground particles, which consists of a fine material component is fed into a tube mill, a remaining portion of the pre-ground particles, which consists of course material and some amount of fine material not fed into the tube mill is returned to the roller mill through the circulation line where the remaining portion of the pre-ground particles is again crushed together with newly fed material particles in the roller mill.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: June 25, 1996
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Chichibu Cement Co., Ltd.
    Inventors: Seisuke Sawamura, Hiroshi Ueda, Kanzaburo Sutou, Mitsuaki Murata