Patents by Inventor Yasuhiro Koike
Yasuhiro Koike 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).
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Publication number: 20160045859Abstract: A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of partially fluorinated or perfluorinated dioxolane monomers and a second monomer, such as dioxane or a partially fluorinated dioxolane. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.Type: ApplicationFiled: October 23, 2015Publication date: February 18, 2016Applicant: MEMBRANE TECHNOLOGY AND RESEARCH, INC.Inventors: Hao Zhang, Zhenjie He, Timothy C. Merkel, Yoshiyuki Okamoto, Yasuhiro Koike
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Patent number: 9261731Abstract: A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more.Type: GrantFiled: February 14, 2013Date of Patent: February 16, 2016Assignees: KEIO UNIVERSITY, NITTO DENKO CORPORATION, DAI NIPPON PRINTING CO., LTD., NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Tsuyoshi Ishikawa, Eizaburo Higuchi
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Patent number: 9261640Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.Type: GrantFiled: February 14, 2013Date of Patent: February 16, 2016Assignees: KEIO UNIVERSITY, DAI NIPPON PRINTING CO., LTD., NITTO DENKO CORPORATION, NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Tsuyoshi Ishikawa, Eizaburo Higuchi
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Publication number: 20160032063Abstract: Disclosed is an optical film having low wavelength dispersibility which is obtained by stretching a film formed of a fluorine-containing cyclic olefin polymer including at least one selected from a repeating structural unit represented by the formula described below, wherein a phase difference at a wavelength of 550 nm is greater than or equal to 50 nm, wavelength dispersibility represented by a ratio Re (400 nm)/Re (550 nm) of a phase difference Re (400 nm) at a wavelength of 400 nm to a phase difference Re (550 nm) at a wavelength of 550 nm is 1.00 to 1.05, wavelength dispersibility represented by a ratio Re (400 nm)/Re (800 nm) of a phase difference Re (400 nm) at a wavelength of 400 nm to a phase difference Re (800 nm) at a wavelength of 800 nm is 1.00 to 1.05, and total light transmittance is greater than or equal to 92%.Type: ApplicationFiled: March 25, 2014Publication date: February 4, 2016Applicants: Keio University, Mitsui Chemicals, Inc.Inventors: Tadahiro Sunaga, Takashi Oda, Yasuhiro Koike
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Patent number: 9233668Abstract: Taking a stroke within a period from when an operation of a brake operating member is started to when a predetermined stroke operation is performed as an ineffective stroke in which the master cylinder pressure is not generated, a control means controls an amount of differential pressure formed by a differential control valve such that a hydraulic braking force that corresponds to a stroke of the brake operating member is generated during the ineffective stroke, and even after the stroke of the brake operating member exceeds the ineffective stroke, increases the wheel cylinder pressure by performing raising of the amount of differential pressure formed by the differential pressure control valve by a predetermined raising amount with respect to the amount of differential pressure during the ineffective stroke.Type: GrantFiled: September 26, 2012Date of Patent: January 12, 2016Assignee: ADVICS CO., LTD.Inventors: Masaki Ninoyu, Masayuki Naito, Yasuhiro Koike
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Publication number: 20150369963Abstract: There are provided an optical film having both low orientation birefringence and low photoelastic birefringence and, at the same time, having excellent transparency and heat resistance, and a polarizing plate including the optical film and a liquid crystal display device. An acrylic copolymer according to the present invention includes as constituent units 0.5 to 35% by mass of N-aromatic substituted maleimide units and 60 to 85% by mass of alkyl (meth)acrylate units having a negative intrinsic birefringence in terms of a homopolymer.Type: ApplicationFiled: November 22, 2013Publication date: December 24, 2015Inventors: Yasuhiro KOIKE, Akihiko TAGAYA, Sayako UCHIZAWA, Akira MATSUO, Yasuo MATSUMURA
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Publication number: 20150351239Abstract: This substrate includes an insulating substrate having a first surface and a second surface, and a metal layer of a metal plate bonded to the first surface. The insulating substrate has a through hole. The metal layer includes: a bent section that is inserted through the through hole and bulges from the first surface toward the second surface; and outer periphery sections that are positioned around the bent section and are bonded to the first surface. The bent section has a first end and a second end positioned on opposite sides, and is bent with respect to the outer periphery sections at the first end and the second ends. The outer periphery sections are divided into a first outer periphery section and a second outer periphery section, which are respectively continuous with the first end and the second end of the bent section.Type: ApplicationFiled: October 23, 2013Publication date: December 3, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kiminori OZAKI, Yasuhiro KOIKE, Hiroaki ASANO, Hitoshi SHIMADU, Shigeki KAWAGUCHI, Tomoaki ASAI
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Publication number: 20150301384Abstract: A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more.Type: ApplicationFiled: February 14, 2013Publication date: October 22, 2015Applicants: KEIO UNIVERSITY, NITTO DENKO CORPORATION, DAI NIPPON PRINTING CO., LTD., NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Tsuyoshi Ishikawa, Eizaburo Higuchi
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Publication number: 20150289375Abstract: This module includes an insulating substrate having a first surface and a second surface, which are positioned on opposite sides to each other, a first metal layer that is provided on the first surface of the insulating substrate and include a metal plate, a second metal layer provided on the second surface of the insulating substrate, a first circuit board including the insulating substrate, the first metal layer, and the second metal layer, an electronic component joined to the first metal layer, and a positioning portion, which is located on the joint surface between the first metal layer and the electronic component, at which the first metal layer and the electronic component are engaged with each other through a recess-projection relationship. The insulating substrate is located between the second metal layer and a part of the first metal layer where the positioning portion is located.Type: ApplicationFiled: October 1, 2013Publication date: October 8, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kiminori Ozaki, Yasuhiro Koike, Hiroaki Asano, Hitoshi Shimadu, Shigeki Kawaguchi, Tomoaki Asai
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Publication number: 20150289371Abstract: A substrate includes an insulating substrate, a metal layer formed on one surface of the insulating substrate, and an electronic component soldered to the surface of the metal layer. The metal layer is formed of a metal plate. The surface of the metal layer has a soldering area, and a groove portion positioned on the outer periphery of the soldering area.Type: ApplicationFiled: October 23, 2013Publication date: October 8, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kiminori Ozaki, Yasuhiro Koike, Hiroaki Asano, Hitoshi Shimadu, Shigeki Kawaguchi, Tomoaki Asai
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Publication number: 20150282313Abstract: A wiring board includes a first substrate including a first surface and a second substrate including a first surface. A solder hole is arranged at least in the first surface of the first substrate. A solder hole is arranged at least in the first surface of the second substrate. The second substrate is coupled to the first substrate. The first substrate and the second substrate are electrically connected with each other. The first surface of the first substrate and the first surface of the second substrate are flush with each other and configured such that a part of one surface of a mask is placed on the first surface of the first substrate and another part of the surface of the mask is placed on the first surface of the second substrate.Type: ApplicationFiled: September 17, 2013Publication date: October 1, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kiminori Ozaki, Yasuhiro Koike, Hiroaki Asano, Hitoshi Shimazu, Tomoaki Asai
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Patent number: 9128238Abstract: Disclosed is an optical material including a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula (1) and a repeating structural unit [B] represented by the general formula (2) and having a molar ratio [A]/[B] of from 95/5 to 1/99, wherein the absolute value of the ratio ?OB/?F is from 0.001 to 0.250 in which ?OB represents the amount of a change in the absolute value of the orientation birefringence calculated from the phase difference (nm) at a wavelength of 633 nm/film thickness (?m) in a stretched film obtained from the optical material, and ?F represents the amount of a change in the absolute value of the orientation coefficient determined from the dichroic ratio of parallel light intensity I? to perpendicular light intensity I?, each relative to the orientation direction according to Raman spectroscopy.Type: GrantFiled: April 4, 2011Date of Patent: September 8, 2015Assignees: MITSUI CHEMICALS, INC., YASUHIRO KOIKEInventors: Tadahiro Sunaga, Takashi Oda, Hirofumi Io, Keisuke Kawashima, Yasuhiro Koike
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Publication number: 20150231555Abstract: Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.Type: ApplicationFiled: July 14, 2014Publication date: August 20, 2015Applicant: Membrane Technology and Research, Inc.Inventors: Zhenjie He, Timothy C. Merkel, Yoshiyuki Okamoto, Yasuhiro Koike
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Publication number: 20150235755Abstract: A planar coil includes an effective line segment, which extends over at least one turn and is configured such that a current flows therein, and a dummy line segment, which extends over at least one turn and is configured such that a current does not flow therein.Type: ApplicationFiled: September 12, 2013Publication date: August 20, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kiminori Ozaki, Yasuhiro Koike, Hiroaki Asano, Hitoshi Shimazu, Tomoaki Asai
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Publication number: 20150228398Abstract: A transformer includes a first substrate, a second substrate, and an insulation sheet. A primary winding and a primary switching element are mounted on the first substrate. A secondary winding formed by a pattern of a metal plate is mounted on the second substrate. The second substrate overlaps the first substrate. The insulation sheet is arranged between the first substrate and the second substrate.Type: ApplicationFiled: February 4, 2015Publication date: August 13, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Sergey MOISEEV, Yasuhiro KOIKE, Tomohiro TSUJI, Kenichi WATANABE
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Patent number: 8998351Abstract: A brake control device for a vehicle includes: a hydraulic brake device including a master cylinder, a wheel cylinder, a differential pressure control valve, and a pump; and a differential pressure control unit that operates the pump and transmits a differential pressure instructing output to the differential pressure control valve to perform a differential pressure control such that a differential pressure is generated; wherein the differential pressure control unit includes a correcting unit, wherein the correcting unit calculates a differential pressure instructing correction amount, based on an increased amount of the differential pressure which is generated by the differential pressure control valve when the increased amount of the differential pressure during the differential pressure control and then corrects the differential pressure instructing output based on the differential pressure instructing correction amount such that the differential pressure instructing output becomes larger than the increasType: GrantFiled: January 30, 2013Date of Patent: April 7, 2015Assignee: Advics Co., Ltd.Inventors: Masayuki Naito, Yoichi Abe, Yasuhiro Koike
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Patent number: 8967880Abstract: In order to fix an optical fiber to a desired position in a holding member easily and tightly, provided is an optical collimator (10) having a plastic optical fiber (13) and a cylindrical holder (11). The holder (11) is configured to hold a collimator lens (12) at an end and has an insertion hole (11a) at an opposite end for inserting the plastic optical fiber (13). The plastic optical fiber (13) is sandwiched by an inner surface of a recess (11e) which is formed at a part of the holder (11) in proper alignment with the collimator lens (12).Type: GrantFiled: May 9, 2011Date of Patent: March 3, 2015Assignees: Mitsubishi Pencil Company, Limited, Japan Aviation Electronics Industry, Limited, Yasuhiro KoikeInventors: Yasuhiro Koike, Hitoshi Suzuki, Hiroyuki Muto, Akihito Mitsui, Naohiko Moriya, Toshitaka Torikai, Takayoshi Yamauchi
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Patent number: 8963672Abstract: This wiring board is provided with an insulating core substrate, a first conductor pattern, a second conductor pattern, and a conductive material. The first conductor pattern and the second conductor pattern are adhered to the insulating core substrate. The second conductor pattern has a first surface and a second surface. The second conductor pattern has a concavity and a through-hole. The opening of the concavity that opens to the first surface and the opening of the through hole that opens to the first surface are interconnected to each other. The first conductor pattern is positioned at the opening of the concavity. The first conductor pattern and the second conductor pattern are electrically connected by means of the conductive material, which fills from the opening of the through hole that opens to the second surface.Type: GrantFiled: June 21, 2012Date of Patent: February 24, 2015Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Hiroaki Asano, Yasuhiro Koike, Kiminori Ozaki, Hitoshi Shimadu, Tetsuya Furuta, Masao Miyake, Takahiro Hayakawa, Tomoaki Asai, Ryou Yamauchi
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Patent number: 8945669Abstract: The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device 1 includes: a vertical hopper 2, which has a cooling unit 3 and a heat melting unit 4 continuous with a lower portion thereof, and houses a material rod R; cooling means 5 for cooling the cooling unit 3; an electric heater 6 that heats the heat melting unit 4; and gas pressurizing means 7 for sequentially supplying molten plastics M to a metal die by a gas pressure. The heat melting unit 4 is formed into a cylinder shape in which an inner diameter is larger than an inner diameter of the cooling unit 3 arranged above, and enables the molten plastics M to spread in the heat melting unit 4.Type: GrantFiled: January 26, 2010Date of Patent: February 3, 2015Assignees: Sekisui Chemical Co., Ltd., Keio UniversityInventors: Tazuru Okamoto, Hirotsugu Yoshida, Yasuhiro Koike
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Publication number: 20150029442Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.Type: ApplicationFiled: February 14, 2013Publication date: January 29, 2015Applicants: KEIO UNIVERSITY, DAI NIPPON PRINTING CO., LTD., NITTO DENKO CORPORATION, NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Tsuyoshi Ishikawa, Eizaburo Higuchi