Patents by Inventor Takahiro Niimi

Takahiro Niimi 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: 8080309
    Abstract: A coating composition forms a coating film having an eliminated or reduced photocatalytic action-derived deterioration, and forms a coating film having a lowered haze value, excellent dispersibility and dispersion stability in a coating liquid form, excellent storage stability, and also excellent coatability. The coating composition includes at least the following four components: titanium dioxide fine particles with eliminated or reduced photocatalytic activity which is obtained by surface treating titanium dioxide fine particles doped with cobalt capable of capturing free electrons and/or holes, with a zinc chelate compound capable of capturing free electrons and/or holes; a binder component; a dispersant; and an organic solvent.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: December 20, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Shinohara, Takahiro Niimi, Toshio Yoshihara
  • Publication number: 20080187732
    Abstract: This invention provides a coating composition that can form a coating film having an eliminated or reduced photocatalytic action-derived deterioration and can form a coating film having a lowered haze value, has excellent dispersibility and dispersion stability in a coating liquid form, has excellent storage stability, and also has excellent coatability. The coating composition is characterized by comprising at least the following four components (1) to (4): (1) titanium dioxide fine particles with eliminated or reduced photocatalytic activity which is obtained by surface treating titanium dioxide fine particles doped with cobalt capable of capturing free electrons and/or holes, with a zinc chelate compound capable of capturing free electrons and/or holes, (2) a binder component, (3) a dispersant, and (4) an organic solvent.
    Type: Application
    Filed: March 3, 2005
    Publication date: August 7, 2008
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Shinohara, Takahiro Niimi, Toshio Yoshihara
  • Patent number: 7371786
    Abstract: The present invention provides a coating composition capable of forming a fluorine-containing coating layer having a low refractive index and a high hardness, a coating layer formed by using the coating composition, an anti-reflecting layer using the coating layer and an anti-reflecting film and an image display device to which the anti-reflecting layer is applied. The coating composition according to the present invention comprises (A) a binder system containing a fluorine-containing component (a) having one or both of a functional group which can be cured by ionizing radiation and a polar group which can be heat-cured, and contains both an ionizing radiation-curable group and a heatcurable polar group as a whole and (B) an inorganic superfine particle of the order of submicron in size which can be dispersed in a colloidal state in a liquid medium for preparing a coating liquid.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: May 13, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Toshio Yoshihara, Takahiro Niimi
  • Patent number: 7014912
    Abstract: A low reflective antistatic film is provided which can prevent electrostatic deposition of foreign materials on the surface thereof, has hardness enough high not to cause a deterioration in transparency derived from a scratch or the like created upon being rubbed, and can prevent reflection of outdoor daylight from the surface of a transparent substrate. The low reflective antistatic film comprises: a transparent substrate film; and, provided on the transparent substrate film in the following order, a transparent conductive layer, a hardcoat layer, and a low refractive layer, the low refractive layer having a lower refractive index than the hardcoat.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: March 21, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroko Suzuki, Takahiro Niimi
  • Publication number: 20060029818
    Abstract: A low reflective antistatic film is provided which can prevent electrostatic deposition of foreign materials on the surface thereof, has hardness enough high not to cause a deterioration in transparency derived from a scratch or the like created upon being rubbed, and can prevent reflection of outdoor daylight from the surface of a transparent substrate. The low reflective antistatic film comprises: a transparent substrate film; and, provided on the transparent substrate film in the following order, a transparent conductive layer, a hardcoat layer, and a low refractive layer, the low refractive layer having a lower refractive index than the hardcoat.
    Type: Application
    Filed: October 12, 2005
    Publication date: February 9, 2006
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hiroko Suzuki, Takahiro Niimi
  • Publication number: 20050094273
    Abstract: The present invention provides an optical film and an optical display device which can suppress the occurrence of interference fringes. The optical film comprises a plurality of transparent layers. A first transparent layer and a second transparent layer, provided in contact with the first transparent layer, constituting the optical film are different from each other in refractive index of material constituting the layer. The contact interface between the first transparent layer and the second transparent layer is a light scattering interface, whereby the occurrence of interference fringes is suppressed. The optical display device comprises this optical film.
    Type: Application
    Filed: September 21, 2004
    Publication date: May 5, 2005
    Inventors: Tomohiro Takao, Takahiro Niimi, Shoichi Komatsu, Takanobu Tadaki
  • Publication number: 20050038137
    Abstract: The present invention provides a coating composition capable of forming a fluorine-containing coating layer having a low refractive index and a high hardness, a coating layer formed by using the coating composition, an anti-reflecting layer using the coating layer and an anti-reflecting film and an image display device to which the anti-reflecting layer is applied. The coating composition according to the present invention comprises (A) a binder system containing a fluorine-containing component (a) having one or both of a functional group which can be cured by ionizing radiation and a polar group which can be heat-cured, and contains both an ionizing radiation-curable group and a heatcurable polar group as a whole and (B) an inorganic superfine particle of the order of submicron in size which can be dispersed in a colloidal state in a liquid medium for preparing a coating liquid.
    Type: Application
    Filed: September 3, 2002
    Publication date: February 17, 2005
    Inventors: Toshio Yoshihara, Takahiro Niimi
  • Patent number: 6562440
    Abstract: The present invention relates to a hard coat film used for various types of displays, wherein cracking and peeling of the hard coat layer is prevented, hardness reduction of the hard coat film is suppressed and the pencil hardness of the hard coat film is in the range of 4H-8H. The hard coat film includes a buffer layer (2) with a thickness of 3-50 &mgr;m, formed on at least one side of a plastic base film (1), which has a buffer function against deformation of the hard coat layer in response to deformation of the plastic base film (1), and a hard coat layer (3) with a thickness of 3-15 &mgr;m additionally formed over the buffer layer. The hard coat film (9) is designed so that the pencil hardness of the plastic base film (1), the pencil hardness of the buffer layer and the pencil hardness of the hard coat layer increase in that order.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: May 13, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Mitsuru Tsuchiya, Takahiro Niimi
  • Patent number: 6503627
    Abstract: An antistatic hard coat film for various displays is provided which can prevent electrostatic deposition of foreign materials and at the same time possesses excellent scratch resistance and hardness high enough not to cause a deterioration in transparency upon being rubbed. The antistatic hard coat film 5 comprises: a transparent substrate film 1; a transparent conductive layer 2, having a surface resistivity of preferably not more than 1012 &OHgr;/□, provided on the substrate film 1; and a hard coat 3 provided on the transparent conductive layer 2, the hard coat 3 preferably having such an anisotropic conductivity that the resistivity in the layer surface direction is higher than the resistivity in the layer thickness direction.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: January 7, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takahiro Niimi, Mitsuru Tsuchiya, Hiroomi Katagiri
  • Patent number: 6489015
    Abstract: A hardcoat film is provided which can improve surface hardness and, at the same time, can prevent the hardcoat film per se from being damaged by stress concentration and is less likely to be scratched. The hardcoat film comprises: a transparent substrate; and a multi-layer hardcoat provided on at least one side of the transparent substrate, the multi-layer hardcoat layer comprising two or more hardcoats, the modulus of elasticity &sgr;m of a hardcoat provided closest to the transparent substrate being higher than the modulus of elasticity &sgr;s of a hardcoat provided as a surface layer.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: December 3, 2002
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Mitsuru Tsuchiya, Amane Koike, Takahiro Niimi
  • Publication number: 20020068156
    Abstract: A low reflective antistatic film is provided which can prevent electrostatic deposition of foreign materials on the surface thereof, has hardness enough high not to cause a deterioration in transparency derived from a scratch or the like created upon being rubbed, and can prevent reflection of outdoor daylight from the surface of a transparent substrate. The low reflective antistatic film comprises: a transparent substrate film; and, provided on the transparent substrate film in the following order, a transparent conductive layer, a hardcoat layer, and a low refractive layer, the low refractive layer having a lower refractive index than the hardcoat.
    Type: Application
    Filed: September 24, 2001
    Publication date: June 6, 2002
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hiroko Suzuki, Takahiro Niimi
  • Patent number: 6329041
    Abstract: The present invention relates to a hard coat film used for various types of displays, wherein cracking and peeling of the hard coat layer is prevented, hardness reduction of the hard coat film is suppressed and the pencil hardness of the hard coat film is in the range of 4H-8H. The hard coat film includes a buffer layer (2) with a thickness of 3-50 &mgr;m, formed on at least one side of a plastic base film (1), which has a buffer function against deformation of the hard coat layer in response to deformation of the plastic base film (1), and a hard coat layer (3) with a thickness of 3-15 &mgr;m additionally formed over the buffer layer. The hard coat film (9) is designed so that the pencil hardness of the plastic base film (1), the pencil hardness of the buffer layer and the pencil hardness of the hard coat layer increase in that order.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: December 11, 2001
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Mitsuru Tsuchiya, Takahiro Niimi
  • Patent number: 6319594
    Abstract: A low reflective antistatic film is provided which can prevent electrostatic deposition of foreign materials on the surface thereof, has hardness enough high not to cause a deterioration in transparency derived from a scratch or the like created upon being rubbed, and can prevent reflection of outdoor daylight from the surface of a transparent substrate. The low reflective antistatic film comprises: a transparent substrate film; and, provided on the transparent substrate film in the following order, a transparent conductive layer, a hardcoat layer, and a low refractive layer, the low refractive layer having a lower refractive index than the hardcoat.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: November 20, 2001
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroko Suzuki, Takahiro Niimi
  • Patent number: 6146753
    Abstract: An antistatic hard coat film for various displays is provided which can prevent electrostatic deposition of foreign materials and at the same time possesses excellent scratch resistance and hardness high enough not to cause a deterioration in transparency upon being rubbed. The antistatic hard coat film 5 comprises: a transparent substrate film 1; a transparent conductive layer 2, having a surface resistivity of preferably not more than 10.sup.12 .OMEGA./.quadrature., provided on the substrate film 1; and a hard coat 3 provided on the transparent conductive layer 2, the hard coat 3 preferably having such an anisotropic conductivity that the resistivity in the layer surface direction is higher than the resistivity in the layer thickness direction.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: November 14, 2000
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takahiro Niimi, Mitsuru Tsuchiya, Hiroomi Katagiri