Patents by Inventor Hideo Takezoe

Hideo Takezoe 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: 20190232374
    Abstract: A die having a cavity and a lower punch fitted into the cavity. The cavity is divided and the parts slide along a division plane passing through the cavity parallel to the fitting direction of the die and the lower punch. The divided cavity parts are placed in a state of alignment along the division plane. The divided cavity parts are each filled with raw material powder. The die and the lower punch are then slid along the division plane, whereby the divided cavity parts are combined as the original cavity. The raw material powder in the cavity in a combined state is compressed by an upper punch and the lower punch.
    Type: Application
    Filed: August 10, 2017
    Publication date: August 1, 2019
    Applicant: DIAMET CORPORATION
    Inventors: Tsuneo MARUYAMA, Shinich TAKEZOE, Hideo SAKAI
  • Patent number: 10287501
    Abstract: A liquid crystal display element having an improved response speed by using a liquid crystal compound having a high K33, while neither improving nor deteriorating all the characteristics as a liquid crystal display element. The liquid crystal display element 10 of the present invention has a first substrate 15, a second substrate 15?, and a liquid crystal composition layer 5 interposed between the first substrate 15 and the second substrate 15?, wherein at least one of the first substrate 15 and the second substrate 15? has an electrode that controls the liquid crystal composition layer 5 and the bend elastic constant K33 of at least one kind of liquid crystal compounds in the liquid crystal composition constituting the liquid crystal composition layer 5 is 20 pN or more.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 14, 2019
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATION, DIC Corporation
    Inventors: Hideo Takezoe, Satoshi Aya, Takashi Yamashita, Kunihiko Okano
  • Patent number: 9194984
    Abstract: A microlens for an organic EL element, which is used by being disposed on a light-emitting surface of the organic EL element, said microlens comprising a cured resin layer having concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 ?m?1, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range of 1 ?m?1 or less.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: November 24, 2015
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Hideo Takezoe, Wonhoe Koo, Suzushi Nishimura, Soon Moon Jeong
  • Patent number: 9035284
    Abstract: A microlens for an organic EL element includes a cured resin layer having concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wave number is 0 ?m?1, and the circular or annular pattern is present within a region where an absolute value of wave number is within a range of 1 ?m?1 or less. The microlens is disposed on a light-emitting surface of the organic EL element.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: May 19, 2015
    Assignees: JX NIPPON OIL & ENERGY CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Hideo Takezoe, Won Hoe Koo, Suzushi Nishimura, Soon Moon Jeong
  • Publication number: 20150104892
    Abstract: A microlens for an organic EL element, which is used by being disposed on a light-emitting surface of the organic EL element, said microlens comprising a cured resin layer having concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 ?m?1, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range of 1 ?m?1 or less.
    Type: Application
    Filed: December 18, 2014
    Publication date: April 16, 2015
    Applicants: JX NIPPON OIL & ENERGY CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Hideo TAKEZOE, Wonhoe KOO, Suzushi NISHIMURA, Soon Moon JEONG
  • Patent number: 8541778
    Abstract: A diffraction grating having a transparent supporting substrate; and a cured resin layer which is stacked on the transparent supporting substrate and which has concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities formed on the surface of the cured resin layer by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 ?m?1, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range of 10 ?m?1 or less.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: September 24, 2013
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Takashi Seki, Suzushi Nishimura, Maki Fukuda, Madoka Fukushima, Satoshi Masuyama, Soon Moon Jeong, Hideo Takezoe, Won Hoe Koo
  • Publication number: 20130235290
    Abstract: Provided is a liquid crystal display element having an improved response speed by using a liquid crystal compound having a high K33, while neither improving nor deteriorating all the characteristics as a liquid crystal display element. The liquid crystal display element 10 of the present invention has a first substrate 15, a second substrate 15?, and a liquid crystal composition layer 5 interposed between the first substrate 15 and the second substrate 15?, wherein at least one of the first substrate 15 and the second substrate 15? has an electrode that controls the liquid crystal composition layer 5 and the bend elastic constant K33 of at least one kind of liquid crystal compounds in the liquid crystal composition constituting the liquid crystal composition layer 5 is 20 pN or more.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 12, 2013
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, DIC Corporation, TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATION
    Inventors: Hideo Takezoe, Satoshi Aya, Takashi Yamashita, Kunihiko Okano
  • Publication number: 20130186462
    Abstract: A transparent electroconductive substrate for a solar cell, comprising: a transparent supporting substrate; a transparent electroconductive layer; and a cured resin layer placed between the transparent supporting substrate and the transparent electroconductive layer, wherein concavities and convexities are formed on a surface of the cured resin layer, the surface facing the transparent electroconductive layer, and when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 ?m?1, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range from 0.5 to 10 ?m?1.
    Type: Application
    Filed: March 4, 2011
    Publication date: July 25, 2013
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Hideo Takezoe, Won Hoe Koo, Suzushi Nishimura, Takashi Seki, Shigetaka Toriyama, Soon Moon Jeong, Maki Fukuda, Madoka Fukushima, Satoshi Masuyama
  • Patent number: 8389303
    Abstract: A method of manufacturing an organic EL element having a corrugated structure, the organic EL element comprising a transparent supporting substrate, a transparent electrode, an organic layer, and a metal electrode, the method comprises the steps of: laminating on the transparent supporting substrate a curable-resin layer having concavity and convexity formed thereon in a periodic arrangement in a way that a curable resin is applied onto the transparent supporting substrate, the curable resin is then cured with a master block being pressed thereto, and thereafter the master block is detached; and obtaining an organic EL element by laminating on the curable-resin layer the transparent electrode, the organic layer, and the metal electrode individually so that a shape of the concavity and convexity formed on a surface of the curable-resin layer can be maintained.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: March 5, 2013
    Assignees: Tokyo Institute of Technology, Nippon Oil Corporation
    Inventors: Hideo Takezoe, Fumito Araoka, Soon Moon Jeong, Suzushi Nishimura, Goro Suzaki
  • Publication number: 20120132897
    Abstract: A diffraction grating having a transparent supporting substrate; and a cured resin layer which is stacked on the transparent supporting substrate and which has concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities formed on the surface of the cured resin layer by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 ?m?1, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range of 10 ?m?1 or less.
    Type: Application
    Filed: July 16, 2010
    Publication date: May 31, 2012
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takashi Seki, Suzushi Nishimura, Maki Fukuda, Madoka Fukushima, Satoshi Mmasuyama, Soon Moon Jeong, Hideo Takezoe, Won Hoe Koo
  • Publication number: 20110278548
    Abstract: A microlens for an organic EL element, which is used by being disposed on a light-emitting surface of the organic EL element, said microlens comprising a cured resin layer having concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 ?m?1, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range of 1 ?m?1 or less.
    Type: Application
    Filed: September 13, 2010
    Publication date: November 17, 2011
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Hideo TAKEZOE, Won Hoe KOO, Suzushi NISHIMURA, Soon Moon JEONG
  • Patent number: 7826510
    Abstract: A laser oscillation element 1 according to the invention comprises a cholesteric liquid crystal layer 2 containing cholesteric liquid crystals, a cholesteric liquid crystal layer 3 containing cholesteric liquid crystals facing the cholesteric liquid crystal layer 2, and a defect layer 4 containing a dye 5 which emits fluorescence upon optical excitation disposed between the cholesteric liquid crystal layers 2, 3. A selective reflection wavelength band in the cholesteric liquid crystals overlaps with the emission band of the fluorescence emitted by the dye 5, the helical winding directions of the cholesteric liquid crystals contained in the cholesteric liquid crystal layers 2, 3 are identical, and the transition moments of the dye 5 are aligned parallel to the surfaces of the cholesteric liquid crystal layers 2, 3. According to the laser oscillation element 1, a laser oscillation can be generated with high efficiency. Moreover, continuous wave lasing can be generated.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: November 2, 2010
    Assignee: Nippon Oil Corporation
    Inventors: Hideo Takezoe, Junji Watanabe, Myoung Hoon Song, Byoungchoo Park, Ki-Chul Shin, Takehiro Toyooka, Suzushi Nishimura
  • Patent number: 7701537
    Abstract: An optical diode. A cholesteric liquid crystal (CLC) layer has a selective reflection wavelength band with a left-handed helical structure, and a phase shifter for changing a phase difference between two intrinsic polarized light components of left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer. When left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer is incident on the phase shifter in the optical diode, the phase shifter turns the left-handed circularly polarized light into right-handed circularly polarized light, which can be transmitted through the CLC layer. When left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer is incident on the CLC layer, it is selectively reflected by the CLC layer.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: April 20, 2010
    Assignees: Tokyo Institute of Technology, Nippon Oil Corporation
    Inventors: Hideo Takezoe, Byoungchoo Park, Myoung Hoon Song, Jisoo Hwang, Takehiro Toyooka, Suzushi Nishimura
  • Publication number: 20070221921
    Abstract: An optical diode which can lower the cost and save electric power is provided. An optical diode 21 of the present invention comprises a cholesteric liquid crystal (CLC) layer 2 having a selective reflection wavelength band with a left-handed helical structure, and a phase shifter 24 for changing the phase difference between two intrinsic polarized light components of left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer 2. When left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer 2 is incident on the phase shifter 24 in the optical diode 21, for example, the phase shifter 24 turns the left-handed circularly polarized light into right-handed circularly polarized light, this right-handed circularly polarized light can be transmitted through the CLC layer 2.
    Type: Application
    Filed: March 2, 2007
    Publication date: September 27, 2007
    Inventors: Hideo Takezoe, Byoungchoo Park, Myoung Song, Jisoo Hwang, Takehiro Toyooka, Suzushi Nishimura
  • Publication number: 20070165687
    Abstract: A laser oscillation element 1 according to the invention comprises a cholesteric liquid crystal layer 2 containing cholesteric liquid crystals, a cholesteric liquid crystal layer 3 containing cholesteric liquid crystals facing the cholesteric liquid crystal layer 2, and a defect layer 4 containing a dye 5 which emits fluorescence upon optical excitation disposed between the cholesteric liquid crystal layers 2, 3. A selective reflection wavelength band in the cholesteric liquid crystals overlaps with the emission band of the fluorescence emitted by the dye 5, the helical winding directions of the cholesteric liquid crystals contained in the cholesteric liquid crystal layers 2, 3 are identical, and the transition moments of the dye 5 are aligned parallel to the surfaces of the cholesteric liquid crystal layers 2, 3. According to the laser oscillation element 1, a laser oscillation can be generated with high efficiency. Moreover, continuous wave lasing can be generated.
    Type: Application
    Filed: October 8, 2004
    Publication date: July 19, 2007
    Inventors: Hideo Takezoe, Junji Watanabe, Myoung Song, Byoungchoo Park, Ki-Chul Shin, Takehiro Toyooka, Suzushi Nishimura
  • Patent number: 6016300
    Abstract: An optical pickup head apparatus for reading information signals from a recording medium having a laser beam light source, an objective lens and a photodetector, the improvement comprises a holographic optical element constructed of a pair of diffraction gratings having different diffractive conditions wherein the element is split into two by a split line near its optical axis as a border and a diffraction generation prevention device for preventing the generation of unwanted diffracted beams from a recording medium. The optical pickup head apparatus irradiates a laser beam emitted from the light source onto a recording medium via the holographic optical element and the objective lens. Beams reflected from the recording medium are guided to the photodetector via the objective lens and the holographic optical element.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: January 18, 2000
    Assignee: Sankyo Seiki Mfg. Co., Ltd.
    Inventors: Tadashi Takeda, Yoshio Hayashi, Hideo Takezoe, Ken Ishikawa
  • Patent number: 5828643
    Abstract: An optical pickup head apparatus for reading information signals from a recording medium having a laser beam light source, an objective lens and a photodetector, the improvement comprises a holographic optical element constructed of a pair of diffraction gratings having different diffractive conditions wherein the element is split into two by a split line near its optical axis as a border and a diffraction generation prevention device for preventing the generation of unwanted diffracted beams from a recording medium. The optical pickup head apparatus irradiates a laser beam emitted from the light source onto a recording medium via the holographic optical element and the objective lens. Beams reflected from the recording medium are guided to the photodetector via the objective lens and the holographic optical element.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: October 27, 1998
    Assignee: Sankyo Seiki Mfg. Co., Ltd.
    Inventors: Tadashi Takeda, Yoshio Hayashi, Hideo Takezoe, Ken Ishikawa
  • Patent number: 5793733
    Abstract: A polarizing beam-splitter comprises an optically isotropics crystalline substrate and a birefringent material layer made of an oriented polydiacetylene film formed on the optically isotropic crystalline substrate. A periodic grating photo-mask is formed in the birefringent material layer by an area that is changed into a different color phase when an ultra violet light is irradiated in a predetermined pattern on the birefringent material layer and by an area in which the color remains unchanged. The periodic grating photo-mask has a diffraction efficiency for the orientation of the oriented polydiacetylene film in the area that is changed into a different color phase which is lower than that in the area in which the color is unchanged.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: August 11, 1998
    Assignee: Sankyo Seiki Mfg. Co., Ltd.
    Inventors: Tadashi Takeda, Yoshio Hayashi, Satoru Nakao, Hideo Takezoe, Ken Ishikawa, Takaaki Suzuki, Atsuo Fukuda
  • Patent number: 5739952
    Abstract: A polarizing beam splitter includes: an optically isotropic substrate; a layer of birefringent material formed on top of said optically isotropic substrate; and a periodic pattern of ridges and grooves formed on a surface of said optically isotropic substrate to make a grating; and a refractive index equal to either the refractive index of the birefringent material for ordinary light or the index for extraordinary light, said grooves being filled with the material.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: April 14, 1998
    Assignee: Kabushiki Kaisha Sankyo Seiki Seisakusho
    Inventors: Tadashi Takeda, Yoshio Hayashi, Hideo Takezoe, Ken Ishikawa