Patents by Inventor Yoshiyuki Okegawa

Yoshiyuki Okegawa 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).

  • Milling and classifying apparatus, collision mill, air classifier, toner, and method for producing toner
    Patent number: 7438245
    Abstract: Disclosed is a milling and classifying apparatus, adapted to produce toner fine particles, comprising a collision mill, and an air classifier, wherein the collision mill comprises a jet nozzle room, a path, a collision plate, and a collision member mounted to a support of the collision plate at downstream of the collision plate, the air classifier comprises a dispersion room and a classification room, the classification room is disposed below the dispersion room, and a flow stabilizer is arranged at a central suction of the separator core to control swirl stream generated within the classification room so as to centrifuge the powder into coarse particles and fine particles by action of the swirl stream.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: October 21, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiro Kawamoto, Kohta Wakimoto, Kohji Kubota, Mamoru Kawaguchi, Yoshiyuki Okegawa, Hideyuki Ueda, Masayuki Kakimoto, Hiroaki Sugiyama, Tomoyuki Yamada, Yuuichi Kohyama, Masato Kobayashi, Fumio Nishide, Kenkoh Degura, Hirofumi Yamanaka, Tohru Suganuma, Shoji Watanabe, Ikuo Tasaki
  • Milling and classifying apparatus, collision mill, air classifier, toner, and method for producing toner
    Publication number: 20060032952
    Abstract: Disclosed is a milling and classifying apparatus, adapted to produce toner fine particles, comprising a collision mill, and an air classifier, wherein the collision mill comprises a jet nozzle room, a path, a collision plate, and a collision member mounted to a support of the collision plate at downstream of the collision plate, the air classifier comprises a dispersion room and a classification room, the classification room is disposed below the dispersion room, and a flow stabilizer is arranged at a central suction of the separator core to control swirl stream generated within the classification room so as to centrifuge the powder into coarse particles and fine particles by action of the swirl stream.
    Type: Application
    Filed: July 12, 2005
    Publication date: February 16, 2006
    Inventors: Masahiro Kawamoto, Kohta Wakimoto, Kohji Kubota, Mamoru Kawaguchi, Yoshiyuki Okegawa, Hideyuki Ueda, Masayuki Kakimoto, Hiroaki Sugiyama, Tomoyuki Yamada, Yuuichi Kohyama, Masato Kobayashi, Fumio Nishide, Kenkoh Degura, Hirofumi Yamanaka, Tohru Suganuma, Shoji Watanabe, Ikuo Tasaki