Patents by Inventor Ryusei Kouda

Ryusei Kouda 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).

  • Electro-conductive roll and image-forming apparatus using the same
    Patent number: 7072604
    Abstract: An electro-conductive roll is provided that makes contact with a body to be charged in a state in which a voltage is applied thereto, and charges the body to be charged, a surface of the electro-conductive roll satisfying the following conditions (a) and (b): (a) the surface of the electro-conductive roll has a 10-point average roughness of 5 ?m or less; and (b) the surface of the electro-conductive roll has a dynamic ultra-microhardness in the range of 0.04 to 0.5.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: July 4, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroyuki Miura, Hiroshi Takayama, Minoru Rokutan, Ryusei Kouda, Takahiko Hattori, Ryuji Watanabe
  • Electro-conductive roll and image-forming apparatus using the same
    Publication number: 20040247340
    Abstract: An electro-conductive roll is provided that makes contact with a body to be charged in a state in which a voltage is applied thereto, and charges the body to be charged, a surface of the electro-conductive roll satisfying the following conditions (a) and (b):
    Type: Application
    Filed: March 19, 2004
    Publication date: December 9, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hiroyuki Miura, Hiroshi Takayama, Minoru Rokutan, Ryusei Kouda, Takahiko Hattori, Ryuji Watanabe