Patents by Inventor Takeo Ooshiba

Takeo Ooshiba 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).

  • Electrophotographic photoreceptor
    Patent number: 5549997
    Abstract: Disclosed is an electrophotographic photoreceptor contains a carrier generation material represented by Formula 1 or 2 having peaks at 2.theta.=6.3.degree., 12.4.degree., 25.3.degree. and 27.1.degree. in the Bragg angle (2.theta..+-.0.2.degree.) as measured by X-ray diffraction under radiation of Cu-K.alpha. rays; said peak of 12.4.degree. has a maximum intensity and has a half width of 0.65.degree. or more; no peak being present at 11.5.degree.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: August 27, 1996
    Assignee: Konica Corporation
    Inventors: Asao Matsushima, Takeo Ooshiba, Yoshihiko Etoh, Akira Kinoshita, Tomoko Suzuki, Tomoo Sakimura