Patents by Inventor Takahiro Kurokawa

Takahiro Kurokawa 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: 20240244717
    Abstract: A heat treatment chamber for performing a heat treatment on a substrate, includes a chamber housing surrounding the substrate, a light transmitting window forming a part of the chamber housing, and an LED light source, provided on an outer side of the chamber housing, and configured to irradiate light on the substrate arranged inside the chamber housing through the light transmitting window, so to perform the heat treatment on the substrate.
    Type: Application
    Filed: January 9, 2024
    Publication date: July 18, 2024
    Inventors: Gohei KUROKAWA, Haruhisa OHASHI, Takahiro INOUE
  • Patent number: 12037422
    Abstract: Disclosed is a gel material having a high water content and excellent mechanical properties. The gel material includes repeating units derived from the following monomers (A) and (B): (A) an anionic monomer containing a polymerizable carbon-carbon multiple bond and an aromatic ring, and (B) a cationic monomer containing a polymerizable carbon-carbon multiple bond and an aromatic ring. The gel material has a water content of 20% by mass to 95% by mass, a tensile elastic modulus of 9 MPa to 1000 MPa, and a tensile elongation at break of 50% to 5000%.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: July 16, 2024
    Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, TORAY INDUSTRIES, INC.
    Inventors: Jian Ping Gong, Takayuki Kurokawa, Honglei Guo, Takahiro Matsuda, Chengtao Yo
  • Patent number: 10724845
    Abstract: The optical module for optical height measurement includes a laser light source, an irradiation optical system, a detection optical system, and a detector. The laser light source is configured to irradiate the layer-structured specimen with a light beam. The irradiation optical system includes an objective lens. The objective lens is located to be approximately perpendicular to the layer-structured specimen. The detection optical system is configured to guide a reflected light reflected by the layer-structured specimen and a light passing through the objective lens and an aperture-restrictor-for-return to the detector. The aperture-restrictor-for-return is located immediately after the objective lens. The aperture-restrictor-for-return is configured to restrict the reflected light and cause only a light in a high NA region to pass through. The detector is configured to convert an entered light into a light detection signal. The detector includes a multi-divided detector array.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: July 28, 2020
    Assignee: HITACHI-LG DATA STORAGE, INC.
    Inventors: Daisuke Tomita, Hideo Suenaga, Takahiro Kurokawa, Yoshitaka Morimoto
  • Publication number: 20190293406
    Abstract: The optical module for optical height measurement includes a laser light source, an irradiation optical system, a detection optical system, and a detector. The laser light source is configured to irradiate the layer-structured specimen with a light beam. The irradiation optical system includes an objective lens. The objective lens is located to be approximately perpendicular to the layer-structured specimen. The detection optical system is configured to guide a reflected light reflected by the layer-structured specimen and a light passing through the objective lens and an aperture-restrictor-for-return to the detector. The aperture-restrictor-for-return is located immediately after the objective lens. The aperture-restrictor-for-return is configured to restrict the reflected light and cause only a light in a high NA region to pass through. The detector is configured to convert an entered light into a light detection signal. The detector includes a multi-divided detector array.
    Type: Application
    Filed: October 24, 2018
    Publication date: September 26, 2019
    Inventors: Daisuke TOMITA, Hideo SUENAGA, Takahiro KUROKAWA, Yoshitaka MORIMOTO
  • Publication number: 20190293408
    Abstract: An optical module for optical height measurement optically measures a height of a specimen and includes an irradiation optical system, two detection optical systems, and a light dividing element. The irradiation optical system includes a laser light source and an objective lens to irradiate the specimen with a light beam. The two detection optical systems each include a divided optical detector configured to detect a reflected light reflected by the specimen. The light dividing element is configured to guide the reflected light to the two detection optical systems. A light that has transmitted the light dividing element and a light reflected by the light dividing element are guided to the respective two detection optical systems. Intensity distributions of the transmitted light and the reflected light on the two detection optical systems are inverted in line symmetry.
    Type: Application
    Filed: October 25, 2018
    Publication date: September 26, 2019
    Inventors: Daisuke TOMITA, Hideo SUENAGA, Takahiro KUROKAWA, Yoshitaka MORIMOTO
  • Patent number: 10220340
    Abstract: A laminated nonwoven fabric includes a first nonwoven fabric that comprises first fibers, and a second nonwoven fabric that comprises second fibers. The second nonwoven fabric is laminated on the first nonwoven fabric. An average fiber diameter D1 of the first fibers and an average fiber diameter D2 of the second fibers satisfy a relation of D1>D2. In viewed from a side of a principal surface of the second nonwoven fabric being not opposed to the first nonwoven fabric, a total area of first portions of the second fibers superimposed on the first fibers and existing on the nearer side than the first fibers is larger than a total area of second portions of the second fibers existing and superimposed on voids S of the first nonwoven fabric formed of the first fibers.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 5, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koji Motomura, Takahiko Murata, Hiroto Sumida, Takahiro Kurokawa, Takatoshi Mitsushima
  • Patent number: 10173158
    Abstract: A laminated nonwoven fabric includes a first nonwoven fabric and a second nonwoven fabric. The first nonwoven fabric contains charged first fibers. The second nonwoven fabric contains second fibers, and is laminated on the first nonwoven fabric. A fiber diameter of the first fibers is larger than a fiber diameter of the second fibers.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 8, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koji Motomura, Hiroto Sumida, Takahiro Kurokawa, Taichi Nakamura, Takayoshi Yamaguchi, Takatoshi Mitsushima
  • Patent number: 10174441
    Abstract: A laminated nonwoven fabric (NF) includes a first NF containing first fibers and a second NF containing second fibers and laminated on the first NF, and has a cut-off edge at an end thereof. An average diameter of the first fibers is larger than that of the second fibers not more than 3 ?m. 50% by mass to 70% by mass, inclusive, of the second fibers satisfy x?y, and 5% by mass to 30% by mass, inclusive, thereof satisfy x<y/2. “x” is a vector component in a direction (X axis direction) of the cut-off edge, and “y” is a vector component in Y axis direction perpendicular to X axis and parallel to a principal surface of the laminated NF. When the second NF is viewed from Z axis direction perpendicular to X and Y axes, at least some of the second fibers satisfying x<y/2 overlap the second fibers satisfying x?y.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: January 8, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Taichi Nakamura, Takayoshi Yamaguchi, Hiroto Sumida, Takahiro Kurokawa, Takatoshi Mitsushima
  • Patent number: 9778077
    Abstract: It is made possible to amplify signal light of an optical fiber sensor and to perform measurement in a long distance. At least one of a plurality of core wires in a multicore optical fiber is used as a signal-light propagating core wire 133 and the other is used as a reference-light propagating core wire 134. Also, homodyne detection of signal light and reference light reflected by an FBG sensor unit 132 arranged in each measurement point is performed. Thus, signal light is amplified. In order to make a difference between optical path lengths of the signal light and the reference light equal to or smaller than a coherence length, an optical path-length adjustment unit including a piezoelectric element or the like is arranged in an optical path of the reference light.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 3, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitaka Morimoto, Takahiro Kurokawa, Koichi Watanabe
  • Publication number: 20170219390
    Abstract: It is made possible to amplify signal light of an optical fiber sensor and to perform measurement in a long distance. At least one of a plurality of core wires in a multicore optical fiber is used as a signal-light propagating core wire 133 and the other is used as a reference-light propagating core wire 134. Also, homodyne detection of signal light and reference light reflected by an FBG sensor unit 132 arranged in each measurement point is performed. Thus, signal light is amplified. In order to make a difference between optical path lengths of the signal light and the reference light equal to or smaller than a coherence length, an optical path-length adjustment unit including a piezoelectric element or the like is arranged in an optical path of the reference light.
    Type: Application
    Filed: February 28, 2014
    Publication date: August 3, 2017
    Applicant: HITACHI, LTD.
    Inventors: Yoshitaka MORIMOTO, Takahiro KUROKAWA, Koichi WATANABE
  • Patent number: 9611573
    Abstract: A nonwoven fabric includes a fiber including a first portion and a second portion connected to the first portion. A first fiber diameter of the first portion is smaller than a reference fiber diameter. A second fiber diameter of the second portion is equal to or greater than the reference fiber diameter. The reference fiber diameter is smaller than 1 ?m. A ratio of a maximum fiber diameter of the second portion to a length of a linear line connecting both end portions of the second portion is from 1/10 to 1/3.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: April 4, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuki Yoshioka, Takayoshi Yamaguchi, Takahiro Kurokawa
  • Publication number: 20170028335
    Abstract: A laminated nonwoven fabric (NF) includes a first NF containing first fibers and a second NF containing second fibers and laminated on the first NF, and has a cut-off edge at an end thereof. An average diameter of the first fibers is larger than that of the second fibers not more than 3 ?m. 50% by mass to 70% by mass, inclusive, of the second fibers satisfy x?y, and 5% by mass to 30% by mass, inclusive, thereof satisfy x<y/2. “x” is a vector component in a direction (X axis direction) of the cut-off edge, and “y” is a vector component in Y axis direction perpendicular to X axis and parallel to a principal surface of the laminated NF. When the second NF is viewed from Z axis direction perpendicular to X and Y axes, at least some of the second fibers satisfying x<y/2 overlap the second fibers satisfying x?y.
    Type: Application
    Filed: June 10, 2016
    Publication date: February 2, 2017
    Inventors: TAICHI NAKAMURA, TAKAYOSHI YAMAGUCHI, HIROTO SUMIDA, TAKAHIRO KUROKAWA, TAKATOSHI MITSUSHIMA
  • Publication number: 20160367924
    Abstract: A laminated nonwoven fabric includes a first nonwoven fabric and a second nonwoven fabric. The first nonwoven fabric contains charged first fibers. The second nonwoven fabric contains second fibers, and is laminated on the first nonwoven fabric. A fiber diameter of the first fibers is larger than a fiber diameter of the second fibers.
    Type: Application
    Filed: May 27, 2016
    Publication date: December 22, 2016
    Inventors: KOJI MOTOMURA, HIROTO SUMIDA, TAKAHIRO KUROKAWA, TAICHI NAKAMURA, TAKAYOSHI YAMAGUCHI, TAKATOSHI MITSUSHIMA
  • Publication number: 20160258092
    Abstract: A nonwoven fabric includes a fiber including a first portion and a second portion connected to the first portion. A first fiber diameter of the first portion is smaller than a reference fiber diameter. A second fiber diameter of the second portion is equal to or greater than the reference fiber diameter. The reference fiber diameter is smaller than 1 ?m. A ratio of a maximum fiber diameter of the second portion to a length of a linear line connecting both end portions of the second portion is from 1/10 to ?.
    Type: Application
    Filed: November 11, 2015
    Publication date: September 8, 2016
    Inventors: Yuki YOSHIOKA, Takayoshi YAMAGUCHI, Takahiro KUROKAWA
  • Publication number: 20160199766
    Abstract: A laminated nonwoven fabric includes a first nonwoven fabric that comprises first fibers, and a second nonwoven fabric that comprises second fibers. The second nonwoven fabric is laminated on the first nonwoven fabric. An average fiber diameter D1 of the first fibers and an average fiber diameter D2 of the second fibers satisfy a relation of D1>D2. In viewed from a side of a principal surface of the second nonwoven fabric being not opposed to the first nonwoven fabric, a total area of first portions of the second fibers superimposed on the first fibers and existing on the nearer side than the first fibers is larger than a total area of second portions of the second fibers existing and superimposed on voids S of the first nonwoven fabric formed of the first fibers.
    Type: Application
    Filed: September 30, 2015
    Publication date: July 14, 2016
    Inventors: Koji MOTOMURA, Takahiko MURATA, Hiroto SUMIDA, Takahiro KUROKAWA, Takatoshi MITSUSHIMA
  • Patent number: 9291620
    Abstract: Provided is an in vitro diagnostic tool configured to quantitatively or qualitatively detect a suspected substance in a test solution, the tool including: a first porous layer having a first surface and a second surface; a base sheet bonded to the first surface; a second porous layer bonded to the second surface; and a reagent configured to react with the suspected substance and carried in at least a part of the second porous layer, wherein: the first porous layer has a matrix structure of first nanofibers formed by electrostatic spinning; the second porous layer has a matrix structure of second nanofibers formed by electrostatic spinning; and a fiber diameter of the second nanofibers is smaller than a fiber diameter of the first nanofibers.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 22, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuki Yoshioka, Takahiro Kurokawa
  • Publication number: 20150243951
    Abstract: A battery includes a positive electrode, a negative electrode, a separator interposed therebetween, and an electrolyte. The separator includes a plurality of nanofibers and has a form of a sheet having a first surface and a second surface opposite thereto. When the average maximum fiber diameter of the nanofibers in the plane direction of the separator is compared between in vicinities of the first and second surfaces and at a center portion in the thickness direction of the separator, average maximum fiber diameters Ds1 and Ds2 of the nanofibers in the vicinity of the first and second surfaces are smaller than an average maximum fiber diameter Dc of the nanofibers at the center portion in the thickness direction of the separator.
    Type: Application
    Filed: May 11, 2015
    Publication date: August 27, 2015
    Inventors: Hiroto SUMIDA, Takahiro KUROKAWA, Takayoshi YAMAGUCHI, Takatoshi MITSUSHIMA
  • Publication number: 20150168395
    Abstract: Provided is an in vitro diagnostic tool configured to quantitatively or qualitatively detect a suspected substance in a test solution, the tool including: a first porous layer having a first surface and a second surface; a base sheet bonded to the first surface; a second porous layer bonded to the second surface; and a reagent configured to react with the suspected substance and carried in at least a part of the second porous layer, wherein: the first porous layer has a matrix structure of first nanofibers formed by electrostatic spinning; the second porous layer has a matrix structure of second nanofibers formed by electrostatic spinning; and a fiber diameter of the second nanofibers is smaller than a fiber diameter of the first nanofibers.
    Type: Application
    Filed: January 18, 2013
    Publication date: June 18, 2015
    Applicant: Panasonic Intellectual Property Management Co. Ltd
    Inventors: Yuki Yoshioka, Takahiro Kurokawa
  • Patent number: 9059453
    Abstract: A battery includes a positive electrode, a negative electrode, a separator interposed therebetween, and an electrolyte. The separator includes a plurality of nanofibers and has a form of a sheet having a first surface and a second surface opposite thereto. When the average maximum fiber diameter of the nanofibers in the plane direction of the separator is compared between in vicinities of the first and second surfaces and at a center portion in the thickness direction of the separator, average maximum fiber diameters Ds1 and Ds2 of the nanofibers in the vicinity of the first and second surfaces arc smaller than an average maximum fiber diameter Dc of the nanofibers at the center portion in the thickness direction of the separator.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: June 16, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroto Sumida, Takahiro Kurokawa, Takayoshi Yamaguchi, Takatoshi Mitsushima
  • Patent number: 8958278
    Abstract: In the optical information reproduction apparatus using Homodyne phase diversity detection, the S/N ratio of a reproduced signal is deteriorated due to the influence of a quantization noise generated in an A/D converter for digitalizing a differential signal. The optical information reproduction apparatus is arranged to have the A/D converter for digitalizing the differential signal having a vertical resolution equal to or higher than 9 bits.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: February 17, 2015
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Takahiro Kurokawa, Atsushi Kikugawa