Patents by Inventor Masaki Ohkubo

Masaki Ohkubo 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: 6790574
    Abstract: An electrophotographic photoreceptor having a photosensitive layer containing, as a charge transporting material, at least one indane compound of the formula (1), and at least one polycarbonate resin of the formula (4) and/or an organic additive containing at least one atom selected from the group consisting of nitrogen, oxygen, phosphorus and sulfur for an electrophotographic photoreceptor.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: September 14, 2004
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Katsumi Abe, Chieko Inayoshi, Masaki Ohkubo, Mitsutoshi Anzai, Yasuo Murakami
  • Electrophotographic photoreceptor
    Publication number: 20030203298
    Abstract: An electrophotographic photoreceptor having a photosensitive layer containing, as a charge transporting material, at least one indane compound of the formula (1), 1
    Type: Application
    Filed: September 26, 2002
    Publication date: October 30, 2003
    Applicant: Hodogaya Chemical Co., Ltd.
    Inventors: Katsumi Abe, Chieko Inayoshi, Masaki Ohkubo, Mitsutoshi Anzai, Yasuo Murakami
  • Fuel control apparatus of an engine
    Patent number: 5081974
    Abstract: A fuel control apparatus of an engine comprises fuel control means for controlling fuel supply means so that an amount of fuel supplied to the engine corresponds to an intake pressure on the basis of a signal outputted from intake pressure detecting means for detecting the intake pressure of an intake passageway, intake resistance changing means for changing a resistance of the intake air flowing through the intake passageway correspondingly to the operating condition of the engine, and correction means for correcting a supply amount of the fuel to be controlled by the fuel control means when the resistance of the intake air flowing through the intake passageway is changed by the intake resistance changing means.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: January 21, 1992
    Assignee: Mazda Motor Corporation
    Inventors: Takeshi Chikamori, Masaki Ohkubo, Akira Kamisakamoto, Shoji Imai, Shunichi Tsubota, Hideyuki Uemura, Shinichi Wakutani