Patents by Inventor Katsuya Takemasa

Katsuya Takemasa 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).

  • LITHOGRAPHIC PRINTING PLATE PRECURSOR AND PLATE MAKING METHOD THEREOF
    Publication number: 20100248142
    Abstract: A lithographic printing plate precursor includes, in the following order: a support; an image-recording layer which is capable of being removed with at least one of printing ink and dampening water and contains a polymerizable compound represented by the formula (1) as defined herein, a polymer particle containing a structural unit represented by the formula (2) as defined herein and a structural unit represented by the formula (3) as defined herein, an infrared absorbing agent and a polymerization initiator; and an overcoat layer.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 30, 2010
    Inventor: Katsuya TAKEMASA
  • Preform for plastic optical material, production method thereof, optical coupling method of plastic optical fiber and connector used for optical coupling
    Patent number: 7590319
    Abstract: A POF includes an inner core having a refractive index distribution and an outer core provided on periphery of the inner core. A ratio Ra/Rb of an outer diameter of the inner core to the outer core satisfies 0.67?(Ra/Rb)?0.87 such that an outgoing beam from an end of the POF may have a parallel area of at least 200 ?m. Thus a space between the end for exiting the exit light and a light receiving device can be kept at least 200 mm without members or devices for collimating.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: September 15, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Yasuyuki Mizushima, Yoshisada Nakamura, Katsuya Takemasa, Masataka Sato, Hiroki Takahashi
  • Preform for plastic optical material, production method thereof, optical coupling method of plastic optical fiber and connector used for optical coupling
    Publication number: 20050175290
    Abstract: A POF includes an inner core having a refractive index distribution and an outer core provided on periphery of the inner core. A ratio Ra/Rb of an outer diameter of the inner core to the outer core satisfies 0.67?(Ra/Rb)?0.87 such that an outgoing beam from an end of the POF may have a parallel area of at least 200 ?m. Thus a space between the end for exiting the exit light and a light receiving device can be kept at least 200 mm without members or devices for collimating.
    Type: Application
    Filed: February 4, 2005
    Publication date: August 11, 2005
    Inventors: Yasuyuki Mizushima, Yoshisada Nakamura, Katsuya Takemasa, Masataka Sato, Hiroki Takahashi
  • Heat-sensitive recording material
    Patent number: 5286703
    Abstract: A heat-sensitive recording material comprising a support having thereon a color-developing layer and at least one UV-absorbing layer with a light-transmittance of 70% or less at 400 nm, 5% or less at 370 nm, and 70% or more for entire visible light range, is disclosed.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: February 15, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naotaka Wachi, Ken Iwakura, Kensuke Ikeda, Katsuya Takemasa