Patents by Inventor Yoshikatsu Kagawa

Yoshikatsu Kagawa 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).

  • Publication number: 20030205268
    Abstract: A photoelectric conversion device comprising a particulate semiconductor layer, wherein the particulate semiconductor layer is prepared by a method comprising a step of irradiating semiconductor particles with electromagnetic wave or a step of heating semiconductor particles at a temperature of 50° C. or higher and lower than 350° C. under a pressure of 0.05 MPa or lower.
    Type: Application
    Filed: May 9, 2003
    Publication date: November 6, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yoshisada Nakamura, Yoshio Tadakuma, Yoshikatsu Kagawa
  • Publication number: 20020015881
    Abstract: A photoelectric conversion device comprising a particulate semiconductor layer, wherein the particulate semiconductor layer is prepared by a method comprising a step of irradiating semiconductor particles with electromagnetic wave or a step of heating semiconductor particles at a temperature of 50° C. or higher and lower than 350° C. under a pressure of 0.05 MPa or lower.
    Type: Application
    Filed: June 13, 2001
    Publication date: February 7, 2002
    Inventors: Yoshisada Nakamura, Yoshio Tadakuma, Yoshikatsu Kagawa
  • Patent number: 6235427
    Abstract: A nonaqueous secondary battery is disclosed, comprising a positive electrode having a positive electrode active material, a negative electrode having a negative electrode material, and a nonaqueous electrolyte, wherein the positive electrode active material is a transition metal oxide capable of intercalating and deintercalating lithium, and the negative electrode material comprises at least one silicic material capable of intercalating and deintercalating lithium selected from silicon, a silicon alloy and a silicide, and a process for producing the nonaqueous secondary battery is disclosed.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: May 22, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshio Idota, Akihiro Matsufuji, Nobufumi Mori, Akira Kase, Yoshikatsu Kagawa, Hajime Miyamoto
  • Patent number: 5707756
    Abstract: The present invention provides a non-aqueous secondary battery having an improved charge and discharge cycle property and high discharge voltage, high energy density, high capacity and increased stability as well as an excellent high electric current atitude by using a lithium-containing transition metal oxide as a positive electrode material and at least one of the specfified composite oxides as a negative electrode material. Accordingly, the feature of the present invention consists in that the negative electrode material mainly consists of at least one member selected from the group consisting of amorphous chalcogen compounds and amorphous oxides containing at least three atoms selected from the group consisting of Group 13, 14, 15 and 2 atoms of Periodic Table.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: January 13, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Noriyuki Inoue, Yukio Maekawa, Tsutomu Miyasaka, Yoshikatsu Kagawa, Akihiro Matsufuji, Hideki Naito, Kensuke Goda, Osamu Takahashi, Toshiharu Nagamachi, Chuzo Kobayashi, Shoichiro Yasunami
  • Patent number: 5350648
    Abstract: A nonaqueous secondary battery comprises an anode active material comprising a carbonaceous material, an electrolyte and a cathode active material comprising a lithium-containing transition metal chalcogenide. The carbonaceous material is obtained by burning a polyacrylonitrile fiber and has length of a crystallite in the c-axis direction of 75 to 250 .ANG. and an interval of 002 faces of 3.41 to 3.44 .ANG., the length and the interval being determined from an X-ray diffraction spectrum thereof using a Cu-K.alpha. ray.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: September 27, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshikatsu Kagawa, Shoichiro Yasunami, Yukio Maekawa
  • Patent number: 5104484
    Abstract: A method for manufacturing a substrate for presensitized plates for use in making lithographic printing plates comprises the steps of electrolytically surface-roughening an aluminum plate or an aluminum alloy plate in a nitric acid-containing electrolyte and then etching the surface with an alkali or an acid to thus form irregularity in the order of not more than 0.1 .mu.m within pits formed on the surface during the electrolytic surface roughening treatment. The method makes it possible to provide a lithographic printing plate stably and simultaneously having excellent printing durability and good resistance to background contamination of non-image areas.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: April 14, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Haruo Nakanishi, Akira Nishioka, Yoshikatsu Kagawa, Nobuyoshi Kaneko
  • Patent number: 4673627
    Abstract: An electrophotographic lithographic printing plate is described, comprising an electrically conductive support and a photoconductive layer on the support, said layer being made mainly of a photoconductive zinc oxide and a resin binder, wherein in the surface of the photoconductive layer, the degree of exposure of photoconductive zinc oxide is from 10% to 70%.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: June 16, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenji Kunichika, Yoshikatsu Kagawa, Chikashi Ohishi, Sho Nakao, Yasuzi Asao