Patents by Inventor Ryoichi Tokimitsu

Ryoichi Tokimitsu 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 PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER
    Publication number: 20140295344
    Abstract: A composition that contains a compound represented by the formula (1) is dissolved in an organic compound, and the composition is purified by using a basic adsorbent that contains at least 15% by mass magnesium and has a volume average particle diameter of 10 ?m to 500 ?m, both inclusive. An undercoat-layer-forming coating liquid is prepared by removing the basic adsorbent and dispersing metal oxide particles in the obtained solution containing the purified form of the composition. An undercoat layer is formed by forming a coat of the undercoat-layer-forming coating liquid and drying the coat.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Mai Murakami, Yuka Ishiduka, Wataru Kitamura, Masaki Nonaka, Ryoichi Tokimitsu
  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
    Publication number: 20140004450
    Abstract: Provided is an electrophotographic photosensitive member in which an undercoat layer is a layer of which at least one selected from the group consisting of a compound represented by the formula (1), a compound represented by the formula (2), a compound represented by the formula (3) and a compound represented by the formula (4) can be detected by gas chromatography analysis when the undercoat layer is heated at 150° C. for 60 minutes by headspace method.
    Type: Application
    Filed: June 10, 2013
    Publication date: January 2, 2014
    Inventors: Ryoichi Tokimitsu, Yuka Ishiduka, Wataru Kitamura, Kenichi Kaku, Mai Murakami