Patents by Inventor Junei Sakaguchi

Junei Sakaguchi 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 element having separate charge generating and charge transporting layers
    Patent number: 5053303
    Abstract: An electrophotographic photosensitive material suitable for application to a laser beam printer is disclosed which includes an electrically conductive support having provided thereon a charge generating layer containing an X-form, metal-free phthalocyanine and a charge transporting layer containing a specific butadiene compound, hydrazone compound or pyrazoline compound. The charge transporting layer may be prepared by coating with a solution containing the specific compound, a polycarbonate resin and a dioxane-containing solvent.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: October 1, 1991
    Assignee: Somar Corporation
    Inventors: Junei Sakaguchi, Soichi Hasegawa, Shuichi Arai
  • Electrophotographic photosensitive material and method of preparing same
    Patent number: 5049465
    Abstract: An electrophotographic photosensitive material suitable for application to a lazer beam printer is disclosed which includes an electrically conductive support having provided thereon a charge generating layer containing a titanium phthalocyanine pigment and a charge transporting layer containing a specific hydrazone compound. The charge transporting layer may be prepared by coating with a solution containing the specific compound, a polycarbonate resin and a dioxane-containing solvent.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: September 17, 1991
    Assignee: Somar Corporation
    Inventors: Junei Sakaguchi, Soichi Hasegawa, Shuichi Arai
  • Method of controlling slime during paper manufacture using alpha-chloro-acylbenzaldoxime derivatives
    Patent number: 4018645
    Abstract: A composition containing an .alpha.-chloro-o-acylbenzaldoxime derivative is effective for inhibiting the formation of slime. The composition has a strong activity for killing microorganisms which form slime, e.g., in the paper and pulp industries without such faults as reducing the whiteness of the paper or pulp, reducing the effect of sizing treatments, degrading the products, etc. A method for controlling slime using this composition is also disclosed.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: April 19, 1977
    Assignee: Somar Manufacturing Co., Ltd.
    Inventors: Nobuyasu Takahashi, Taiichi Yamaguchi, Junei Sakaguchi, Hideo Hamada
  • .alpha.-Chloro-o-acylbenzaldoxime derivatives as slime control agents
    Patent number: 3968240
    Abstract: A composition containing an .alpha.-chloro-o-acylbenzaldoxime derivative is effective for inhibiting the formation of slime. The composition has a strong activity for killing microorganisms which form slime, e.g., in the paper and pulp industries without such faults as reducing the whiteness of the paper or pulp, reducing the effect of sizing treatments, degrading the products, etc. A method for controlling slime using this composition is also disclosed.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: July 6, 1976
    Assignee: Somar Manufacturing Co., Ltd.
    Inventors: Nobuyasu Takahashi, Taiichi Yamaguchi, Junei Sakaguchi, Hideo Hamada