Patents by Inventor Midori Fukawatase

Midori Fukawatase 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).

  • Infrared-sensitive electrophotoconductive element comprising an anthanthrone, a phthalocyanine and an oxadiazole compound in admixture
    Patent number: 4868079
    Abstract: An electrophotoconductor is disclosed, comprising a conductive support having provided thereon a photoconductive layer comprising a resin binder having dispersed therein an anthanthrone compound, a phthalocyanine compound, and an oxadiazole compound. The electrophotoconductor exhibits high sensitivity in the wavelength region of from 760 to 850 nm and high negative charge retention and is suitable for use in a recording device using a semiconductor laser as a light source.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: September 19, 1989
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Nguyen C. Khe, Masanobu Nakamura, Midori Fukawatase, Kenji Takahashi
  • Electrophotographic printing plate comprising disazo and perynone compounds, hole transport material and alkali soluble resin
    Patent number: 4859555
    Abstract: An electrophotographic printing plate comprises a substrate having formed thereon a photoconductive layer comprising (a) a disazo based compound, (b) a perynone based compound, (c) a hole transport material, and (d) an alkali-soluble resin.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: August 22, 1989
    Assignee: Dainippon Ink & Chemical, Inc.
    Inventors: Yoshihiro Nishio, Masanobu Nakamura, Midori Fukawatase, Kenji Takahashi
  • Electrophotoconductor
    Patent number: 4699862
    Abstract: An electrophotoconductor comprising a photosensitive layer containing (a) a zinc oxide compound, (b) a phthalocyanine compound, (c) a hole transporting material and (d) a binder resin.
    Type: Grant
    Filed: July 1, 1986
    Date of Patent: October 13, 1987
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Nguyen C. Khe, Masanobu Nakamura, Midori Fukawatase, Kenji Takahashi