Patents by Inventor Isao Ikuhara

Isao Ikuhara 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).

  • Patent number: 7813038
    Abstract: A light-scattering film is provided and includes a transparent support having thereon at least a light-scattering layer. When substantially parallel light is incident on a surface of the film at an incident angle of 5°, the reflectance for an angle ? in the light-receiving part measured in a plane containing the film normal line and the incident direction is R(?), the value obtained by normalizing R(?) by the reflectance of regular reflection is Rrel(?), and the value calculated from the maximum variation |dRrel(?)/d?|max for the angle ? is a scattering coefficient A (formula 1), the reflection coefficient B (formula 2) calculated from the scattering coefficient A and the 5° specular reflectance Rs is from 2.0 to 5.0. Scattering coefficient A=1/(10×|dRrel(?)/d?|max)??(Formula 1) Reflection coefficient B=2.2×log 10(Rs)?7.5×log 10(A)+5.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: October 12, 2010
    Assignee: Fujifilm Corporation
    Inventors: Katsumi Inoue, Jun Watanabe, Tetsuya Asakura, Daiki Wakizaka, Hideyasu Ishibashi, Isao Ikuhara
  • Patent number: 7357981
    Abstract: An optical filter comprising a transparent support having a tensile impact strength of 392 kJ/m2 or more having provided thereon a filter layer having an absorption maximum in the range of from 560 to 620 nm.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: April 15, 2008
    Assignee: Fujifilm Corporation
    Inventors: Isao Ikuhara, Tsukasa Yamada, Takumi Ando
  • Publication number: 20070229804
    Abstract: A light-scattering film is provided and includes a transparent support having thereon at least a light-scattering layer. When substantially parallel light is incident on a surface of the film at an incident angle of 5°, the reflectance for an angle ? in the light-receiving part measured in a plane containing the film normal line and the incident direction is R(?), the value obtained by normalizing R(?) by the reflectance of regular reflection is Rrel(?), and the value calculated from the maximum variation |dRrel(?)/d?|max for the angle ? is a scattering coefficient A (formula 1), the reflection coefficient B (formula 2) calculated from the scattering coefficient A and the 5° specular reflectance Rs is from 2.0 to 5.0. Scattering coefficient A=1/(10×|dRrel(?)/d?|max)??(Formula 1) Reflection coefficient B=2.2×log 10(Rs)?7.5×log 10(A)+5.
    Type: Application
    Filed: March 27, 2007
    Publication date: October 4, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Katsumi Inoue, Jun Watanabe, Tetsuya Asakura, Daiki Wakizaka, Hideyasu Ishibashi, Isao Ikuhara
  • Publication number: 20050094275
    Abstract: An optical filter comprising a transparent support having a tensile impact strength of 392 kJ/m2 or more having provided thereon a filter layer having an absorption maximum in the range of from 560 to 620 nm.
    Type: Application
    Filed: November 23, 2004
    Publication date: May 5, 2005
    Inventors: Isao Ikuhara, Tsukasa Yamada, Takumi Ando
  • Patent number: 6849327
    Abstract: An optical filter comprising a filter layer absorbing visible light, a transparent support, in particular a transparent support comprising a biaxially stretched film, and an antireflection layer, with which an image display such as a plasma display is equipped for preventing reflection and improving color reproduction. An optical filter comprising a transparent support having provided at least on one side of the support a filter layer containing a dye and a polymer binder, wherein an antireflection layer having an antireflection property to visible light is provided on the side opposite to the side on which the filter layer is provided when the filter layer is provided on either one side, and the antireflection layer is provided on either one side when the filter layers are provided on both sides, and the transparent support comprises a biaxially stretched film having a thickness of from 10 to 500 ?m.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: February 1, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Isao Ikuhara, Tsukasa Yamada, Takumi Ando
  • Patent number: 6515811
    Abstract: An optical filter comprises a transparent support and at least one filter layer. The optical filter has an absorption maximum in the wavelength region of 560 to 620 nm. The optical filter also has another absorption maximum in the wavelength region of 700 to 1,200 nm. A plasma display panel having a display surface covered with an optical filter is also disclosed.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: February 4, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Isao Ikuhara, Toru Harada, Takumi Ando
  • Publication number: 20010053034
    Abstract: An optical filter comprises a transparent support and at least one filter layer. The optical filter has an absorption maximum in the wavelength region of 560 to 620 nm. The optical filter also has another absorption maximum in the wavelength region of 700 to 1,200 nm. A plasma display panel having a display surface covered with an optical filter is also disclosed.
    Type: Application
    Filed: January 16, 2001
    Publication date: December 20, 2001
    Inventors: Isao Ikuhara, Toru Harada, Takumi Ando
  • Patent number: 6157504
    Abstract: An optical filter comprises a transparent support and a filter layer. The filter layer has an absorption maximum in the wavelength range of 500 to 550 nm. The filter layer further has another absorption maximum in the wavelength range of 560 to 620 nm. The optical filter has a transmittance in the range of 40 to 85% at the absorption maximum in the wavelength range of 500 to 550 nm. The optical filter further has a transmittance in the range of 0.01 to 80% at the absorption maximum in the wavelength range of 560 to 620 nm.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: December 5, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsukasa Yamada, Taku Nakamura, Toru Harada, Isao Ikuhara, Yoshiharu Yabuki
  • Patent number: 5631124
    Abstract: A method of producing a photographic polyester laminate support having a laminate of layers of at least two kinds of polyesters can provide low formation of scratches in a camera and a curl in the film's width direction. In the support, the glass transition temperature (Tg) of each polyester of the laminate is within the range of from 90.degree. C. to 200.degree. C. and the laminate is subjected to heat-fixing in a temperature range as defined by formula (1):Heat-fixing temperature (.degree.C.)=(Tm(L)-50) to (Tm(H)-10)formula (1)wherein Tm(H)(.degree.C.) means the highest melting temperature of polyesters that constitute the laminate support, and Tm(L)(.degree.C.) means the lowest melting temperature of polyesters that constitute the laminate support.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: May 20, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Isao Ikuhara, Fumio Kawamoto, Yoshiki Sakaino, Shohei Yoshida, Yasutomo Goto
  • Patent number: 4840981
    Abstract: A polyethylene terephthalate resin composition comprising a polyethylene terephthalate resin and from 0.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: June 20, 1989
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Masayoshi Hasuo, Seiichi Mukai, Ryo Saito, Isao Ikuhara