Patents by Inventor Akihiro Ogawa

Akihiro Ogawa 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: 20170023489
    Abstract: A surface inspection method for a steel pipe detects a surface defect on a hot steel pipe, and includes: an imaging step of imaging a self-luminous image of the hot steel pipe; a correcting step of making more uniform luminance variation in a circumferential direction of the self-luminous image and correcting the self-luminous image; and a detecting step of detecting a surface defect based on the self-luminous image corrected at the correcting step.
    Type: Application
    Filed: March 3, 2015
    Publication date: January 26, 2017
    Inventors: Yukinori Iizuka, Hiroaki Ono, Toshifumi Kodama, Akihiro Ogawa
  • Patent number: 9362540
    Abstract: Provided is a method for producing a propylene-based resin microporous film capable of forming a high-performance lithium ion battery. The method for producing a propylene-based resin microporous film includes an extrusion step of melt-kneading a propylene-based resin in an extruder, and extruding the resin to obtain a propylene-based resin film; a first stretching step of uniaxially stretching the propylene-based resin film at a surface temperature of ?20 to 100° C.; second stretching step of repeating, a plurality of times, a stretching basic step in which the propylene-based resin film after the first stretching step is uniaxially stretched at a surface temperature that is equal to or lower than a temperature lower than the melting point of the propylene-based resin by 10 to 100° C.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 7, 2016
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Akihiro Ogawa, Takahiko Sawada, Shotaro Kobaru
  • Publication number: 20150331072
    Abstract: A magnetic field detecting sensor includes a bridge circuit which is connected to multiple magnetoresistive effect elements and is capable of outputting a differential voltage between specified connection points, a magnetic field generating conductor for providing the magnetoresistive effect elements with a magnetic field in a direction opposite to that of the detection magnetic field by disposing a magnetic body near the center of the bridge circuit, a differential operation circuit which the differential voltage is input in and makes a feedback current flow to the magnetic field generating conductor, wherein the feedback current generates the magnetic field in a direction opposite to that of the detection magnetic field in the magnetic field generating conductor, and a voltage converting circuit for outputting the feedback current as a voltage value. The magnetic field generating conductor and the magnetoresistive effect elements are formed in the same stacked body.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 19, 2015
    Inventors: Akihiro OGAWA, Tamon KASAJIMA, Kei TANABE
  • Publication number: 20150115938
    Abstract: A magnetic field detection device includes: a first magnetic field generating part, including a first magnetic field generating conductor; a first magnetic field detection part, including a first magnetic field detection element and a first differential operation part, wherein a first output of the first magnetic field detection element corresponding to the environment magnetic field is inputted into the first differential operation part, and a first feedback current flows into the first magnetic field generating conductor, and thus the first magnetic field generating part provides the first magnetic field detection element with a first feedback current magnetic field, with a direction opposite to the environment magnetic field; a second magnetic field generating part, including a second magnetic field generating conductor, in which a second current corresponding to the first feedback current flows; and a second magnetic field detection part, including a second magnetic field detection element.
    Type: Application
    Filed: October 30, 2014
    Publication date: April 30, 2015
    Inventors: Tamon KASAJIMA, Kei TANABE, Akihiro OGAWA
  • Publication number: 20150078391
    Abstract: In an air-conditioning system, an outdoor unit and an indoor unit communicate through a relay device, including a plurality of communication ports; a plurality of communication networks having logical connection relationships with the respective communication ports; and a plurality of nodes having logical connection relationships with the respective communication networks. The plurality of nodes are each associated with one of the outdoor unit and the indoor unit. Among the plurality of nodes, a certain node is set as a first node, and another certain node different from the first node is set as a second node. The relay device executes transfer processing of transferring a communication frame from the first node to the second node, and then if the relay device does not receive a reception acknowledgment signal from the second node, limits a number of re-transmission times when the relay device re-transfers the communication frame to the second node.
    Type: Application
    Filed: June 13, 2012
    Publication date: March 19, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takayoshi Kubo, Akihiro Ogawa
  • Publication number: 20140349195
    Abstract: Provided is a method for producing a propylene-based resin microporous film capable of forming a high-performance lithium ion battery. The method for producing a propylene-based resin microporous film includes an extrusion step of melt-kneading a propylene-based resin in an extruder, and extruding the resin to obtain a propylene-based resin film; a first stretching step of uniaxially stretching the propylene-based resin film at a surface temperature of ?20 to 100° C.; second stretching step of repeating, a plurality of times, a stretching basic step in which the propylene-based resin film after the first stretching step is uniaxially stretched at a surface temperature that is equal to or lower than a temperature lower than the melting point of the propylene-based resin by 10 to 100° C.
    Type: Application
    Filed: September 14, 2012
    Publication date: November 27, 2014
    Inventors: Akihiro Ogawa, Takahiko Sawada, Shotaro Kobaru
  • Patent number: 8867012
    Abstract: In a liquid crystal device, a shoulder portion configured to increase the distance between a element-substrate-side substrate body and a opposed-substrate-side substrate body is provided on the opposed-substrate-side substrate body in an area overlapped with a sealing material including a gap material. Therefore, in an area inside the sealing material, the gap between the element substrate and the opposed substrate is smaller than the gap therebetween in the area overlapped with the sealing material. Therefore, the layer thickness of the liquid crystal layer can be reduced without reducing the size of the gap material.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: October 21, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Akihiro Ogawa
  • Publication number: 20130209892
    Abstract: Provided is a propylene resin microporous film which has excellent lithium ion permeability, and can be used to fabricate a high-performance lithium ion battery and prevent short circuits between positive and negative electrodes by dendrites. The propylene resin microporous film has micropores formed by uniaxially stretching a propylene resin film, a degree of air permeability of 100 to 400 s/100 mL, and a rate of surface aperture of 30 to 55%.
    Type: Application
    Filed: June 29, 2011
    Publication date: August 15, 2013
    Inventors: Akihiro Ogawa, Takahiko Sawada, Hiroshi Tada, Shotaro Kobaru, Masatoshi Minami, Mitsuo Sasakura, Kazuo Yamagata
  • Publication number: 20110234927
    Abstract: In a liquid crystal device, a shoulder portion configured to increase the distance between a element-substrate-side substrate body and a opposed-substrate-side substrate body is provided on the opposed-substrate-side substrate body in an area overlapped with a sealing material including a gap material. Therefore, in an area inside the sealing material, the gap between the element substrate and the opposed substrate is smaller than the gap therebetween in the area overlapped with the sealing material. Therefore, the layer thickness of the liquid crystal layer can be reduced without reducing the size of the gap material.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 29, 2011
    Applicant: Seiko Epson Corporation
    Inventor: Akihiro Ogawa
  • Patent number: 7403460
    Abstract: An evaluation method for calculating an identification signal by using PRML, comprises a table storing true patterns and ideal signals thereof, false patterns corresponding to the true patterns and ideal signals thereof, and Euclidean distance between the true pattern and the false pattern, a calculating unit, when a recording signal synchronized with an identification signal coincides with any pattern of the table, calculates a distance between Euclidean distance between the ideal signal of the true pattern and a reproduction signal and Euclidean distance between the ideal signal of the false pattern and a reproduction signal, and an evaluation unit which evaluates an identification signal by using an average and standard deviation of difference. A table for patterns is created for a likely mistaken pattern, whereby calculating an evaluation value with high precision, of a signal quality, with a small amount of calculation.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: July 22, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuji Nagai, Yutaka Kashihara, Akihiro Ogawa
  • Patent number: 7150893
    Abstract: A milk beverage of the present invention comprises a polyglycerol fatty acid ester having a cloud point of not less than 90° C. when measured at a concentration of 1% by weight in a 20% sodium chloride aqueous solution containing said ester.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: December 19, 2006
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Akihiro Ogawa, Toshiya Katsuragi
  • Patent number: 6130329
    Abstract: An anionic surface active agent such as the monoglyceride of succinic acid is incorporated into an aqueous solution of a fatty ester of sucrose to prepare an aqueous solution of a fatty ester of sucrose having a reduced viscosity. A process for reducing the viscosity of an aqueous solution of a fatty ester of sucrose is disclosed, which comprises incorporating an anionic surface active agent in an aqueous solution containing from 8 to 50% by weight of a fatty ester of sucrose having an HLB of from 5 to 20 in an amount of from 1 to 50 parts by weight based on 100 parts by weight of the fatty ester of sucrose. A novel process is also provided, which comprises the use of an aqueous solution of a fatty ester of sucrose having a viscosity thus reduced as an emulsifying agent for dispersing a sparingly water- soluble particulate inorganic compound or cosmetic material therein.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 10, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Akihiro Ogawa, Naoya Otomo, Toru Tagawa
  • Patent number: 5108545
    Abstract: Disclosed is a method for making a paper support for photographic paper by a Fourdrinier paper machine of the twin-wire type provided with a lower wire on which a wet web is formed and an endless upper wire facing said lower wire with the wet web between them wherein the upper wire comes in contact with the wet web after the latter has travelled a distance of 5 to 12 m from the point where the paper stock had been fed to the lower wire which is preferably shaked in a horizontal direction and the rate of drainage through the upper wire to the sum of drainages through the lower wire and the upper wire is adjusted to 15 to 50% to give a smooth surface on which a photographic emulsion layer is to be formed.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: April 28, 1992
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Kenji Marumo, Akihiro Ogawa, Shinsuke Ikemagi