Patents by Inventor Naoto Abew

Naoto Abew 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).

  • Bisstyryl compound and the electrophotographic photoreceptors relating thereto
    Patent number: 5270140
    Abstract: An electrophotographic photoreceptors containing a bisstyryl compound represented by the following formula I is disclosed. ##STR1## R.sup.0 and/or R.sup.00 represent methyl group, and the rest of Rs represent hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and Ar.sup.1 and Ar.sup.2 represent each an aromatic group.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: December 14, 1993
    Assignee: Konica Corporation
    Inventors: Naoto Abew, Naohiro Hirose, Hirofumi Hayata, Syozo Mitsui, Shinichi Suzuki, Osamu Sasaki, Yoshio Takizawa, Takeo Oshiba