Patents by Inventor Kou Takahashi

Kou Takahashi 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: 10253823
    Abstract: In a cooling structure in a clutch having drive plates and driven plates, a lower limit of a width of each of dot grooves is set to a width a at which a flow quantity of lubricating oil passing through each of the dot grooves becomes a minimum flow quantity at which the drive plates and the driven plates can be cooled to a temperature equal to or lower than an upper limit temperature (Tmax) and an upper limit of the width of each of the dot grooves is set to a width b at which an air content in lubricating oil passing through each of the dot grooves becomes a maximum air content at which, according to lubricating oil having the air content, the drive plates and the driven plates can be cooled to a temperature equal to or lower than the upper limit temperature (Tmax).
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: April 9, 2019
    Assignee: JATCO Ltd
    Inventors: Akira Sugimura, Atsushi Maeda, Kou Takahashi, Jumpei Hayakawa, Tadashi Naito, Takashi Kubo
  • Publication number: 20170122383
    Abstract: In a cooling structure in a clutch having drive plates and driven plates, a lower limit of a width of each of dot grooves is set to a width a at which a flow quantity of lubricating oil passing through each of the dot grooves becomes a minimum flow quantity at which the drive plates and the driven plates can be cooled to a temperature equal to or lower than an upper limit temperature (Tmax) and an upper limit of the width of each of the dot grooves is set to a width b at which an air content in lubricating oil passing through each of the dot grooves becomes a maximum air content at which, according to lubricating oil having the air content, the drive plates and the driven plates can be cooled to a temperature equal to or lower than the upper limit temperature (Tmax).
    Type: Application
    Filed: February 26, 2015
    Publication date: May 4, 2017
    Applicant: JATCO Ltd
    Inventors: Akira SUGIMURA, Atsushi MAEDA, Kou TAKAHASHI, Jumpei HAYAKAWA, Tadashi NAITO, Takashi KUBO
  • Patent number: 9325040
    Abstract: An electrical storage apparatus 1 includes a plurality of battery modules 10 and cooling passages A, B for cooling each of the battery modules 10. The cooling passage A is configured so as to cool all battery modules 10 mounted in the electrical storage apparatus 1 at all times during charging. The cooling passage B is configured so as to cool only a new battery module 10a as a replacement during charging. This enables the battery module 10a having a temperature during charging higher than that of a battery module 10 yet to be replaced to be subject to forced cooling, thereby preventing performance of the battery module 10a from being degraded.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: April 26, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Kou Takahashi, Hidekazu Fujimura, Tadashi Yoshida
  • Patent number: 9070628
    Abstract: According to the invention, a method of manufacturing an esterified substance including a process in which a copolymer is obtained by copolymerizing a 1-alkene having 5 to 80 carbon atoms and maleic anhydride, and a process in which an esterification reaction of the copolymer and an alcohol having 5 to 25 carbon atoms is caused in a presence of trifluoromethanesulfonic acid in order to obtain a reaction mixture containing an esterified substance including at least one repetition unit selected from formulae (c) to (f) is provided, and, in the formulae (c) to (f), R represents an aliphatic hydrocarbon group having 3 to 78 carbon atoms, R2 represents a hydrocarbon group having 5 to 25 carbon atoms, m represents the copolymerization molar ratio X/Y of the 1-alkene (X) to the maleic anhydride (Y) and is 1/2 to 10/1, and n is an integer of more than or equal to 1.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: June 30, 2015
    Assignees: SUMITOMO BAKELITE CO., LTD., AIR WATER INC.
    Inventors: Jun-ichi Tabei, Yoshihisa Sone, Kiyotaka Murata, Kou Takahashi
  • Publication number: 20140316103
    Abstract: An insulating material obtained by using an epoxy resin composition comprising, as an epoxy resin curing agent, a polycondensation-type aryloxysilane compound contained in an amount of 50 to 100 wt %, having a hydroxyl group equivalent in a range of 1,000 to 8,000 g/eq, and an epoxy resin having an epoxy equivalent of 200 to 500, wherein a thermally cured product obtained by curing this epoxy resin composition at a temperature of 180° C. or lower, shows a dielectric constant and a dielectric loss tangent of 3.00 or smaller and 0.015 or smaller, respectively, at 1 GHz under normal temperature. The insulating material using the epoxy resin composition can exhibit both excellent dielectric properties and practical characteristics, and is suitable for an interlayer insulating material of a multilayer printed circuit board.
    Type: Application
    Filed: November 22, 2012
    Publication date: October 23, 2014
    Inventor: Kou Takahashi
  • Publication number: 20130177791
    Abstract: An electrical storage apparatus 1 includes a plurality of battery modules 10 and cooling passages A, B for cooling each of the battery modules 10. The cooling passage A is configured so as to cool all battery modules 10 mounted in the electrical storage apparatus 1 at all times during charging. The cooling passage B is configured so as to cool only a new battery module 10a as a replacement during charging. This enables the battery module 10a having a temperature during charging higher than that of a battery module 10 yet to be replaced to be subject to forced cooling, thereby preventing performance of the battery module 10a from being degraded.
    Type: Application
    Filed: September 30, 2010
    Publication date: July 11, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Kou Takahashi, Hidekazu Fujimura, Tadashi Yoshida
  • Publication number: 20130059983
    Abstract: According to the invention, a method of manufacturing an esterified substance including a process in which a copolymer is obtained by copolymerizing a 1-alkene having 5 to 80 carbon atoms and maleic anhydride, and a process in which an esterification reaction of the copolymer and an alcohol having 5 to 25 carbon atoms is caused in a presence of trifluoromethanesulfonic acid in order to obtain a reaction mixture containing an esterified substance including at least one repetition unit selected from formulae (c) to (f) is provided, and, in the formulae (c) to (f), R represents an aliphatic hydrocarbon group having 3 to 78 carbon atoms, R2 represents a hydrocarbon group having 5 to 25 carbon atoms, m represents the copolymerization molar ratio X/Y of the 1-alkene (X) to the maleic anhydride (Y) and is 1/2 to 10/1, and n is an integer of more than or equal to 1.
    Type: Application
    Filed: May 25, 2011
    Publication date: March 7, 2013
    Applicants: AIR WATER INC., SUMITOMO BAKELITE CO., LTD.
    Inventors: Jun-ichi Tabei, Yoshihisa Sone, Kiyotaka Murata, Kou Takahashi
  • Patent number: 7695838
    Abstract: A part of cell stack portions constituting a part of a fuel cell stack is used as a voltage detection portion, the size of a frequency component belonging to a predetermined specific frequency range is extracted from a voltage signal detected and the existence/absence of abnormality of a fuel cell system is diagnosed on the basis of the frequency component extracted.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: April 13, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Komachiya, Hiroshi Yamauchi, Katsunori Nishimura, Kou Takahashi, Yoshinari Hori, Yoshihide Kondo
  • Publication number: 20070196707
    Abstract: A part of cell stack portions constituting a part of a fuel cell stack is used as a voltage detection portion, the size of a frequency component belonging to a predetermined specific frequency range is extracted from a voltage signal detected and the existence/absence of abnormality of a fuel cell system is diagnosed on the basis of the frequency component extracted.
    Type: Application
    Filed: October 6, 2005
    Publication date: August 23, 2007
    Inventors: Masahiro Komachiya, Hiroshi Yamauchi, Katsunori Nishimura, Kou Takahashi, Yoshinari Hori, Yoshihide Kondo
  • Publication number: 20050277013
    Abstract: The present invention provides a fuel cell employing a metal separator in which low gas pressure loss, high hydrogen utilization factor operation and long term power generation are possible.
    Type: Application
    Filed: June 14, 2005
    Publication date: December 15, 2005
    Inventors: Kenji Yamaga, Hiroshi Yamauchi, Kou Takahashi
  • Publication number: 20050136315
    Abstract: A solid polymer fuel cell has a separator in which a separator board formed therein passages and manifolds are interposed between two frames. The separator board includes coupling parts between the manifold and the passages, which have a digit-like or grid-like support structure, and the coupling parts are held between the frames within spaces in a gas introduction manifold and a gas discharge manifold which are formed in the separator board. With this arrangement, reaction gas flows through spaces which are defined, within the coupling parts formed in the separator board, by the digit-like parts or the grid-like parts and the two frames. With this configuration, gas crossing along the separator board is prevented. Further, with the provision of parts for turning back reaction gas on the insides of the frames, a serpentine passage structure can be obtained.
    Type: Application
    Filed: February 16, 2005
    Publication date: June 23, 2005
    Inventors: Hiroshi Yamauchi, Kou Takahashi
  • Publication number: 20040142226
    Abstract: A solid polymer fuel cell has a separator in which a separator board formed therein passages and manifolds are interposed between two frames. The separator board includes coupling parts between the manifold and the passages, which have a digit-like or grid-like support structure, and the coupling parts are held between the frames within spaces in a gas introduction manifold and a gas discharge manifold which are formed in the separator board. With this arrangement, reaction gas flows through spaces which are defined, within the coupling parts formed in the separator board, by the digit-like parts or the grid-like parts and the two frames. With this configuration, gas crossing along the separator board is prevented. Further, with the provision of parts for turning back reaction gas on the insides of the frames, a serpentine passage structure can be obtained.
    Type: Application
    Filed: August 29, 2003
    Publication date: July 22, 2004
    Inventors: Hiroshi Yamauchi, Kou Takahashi
  • Patent number: 4688813
    Abstract: A carrier for rescuing patients having a frame having a pair of lower horizontal portions and upwardly inclined portions adjacent to the horizontal portions at rear end portions thereof.A pair of front and rear wheels are provided on the frame, and a pair of crawlers engaged with the frame and wheels to be moved on the frame and around the wheels.A seat having a handle is provided on the frame. A brake such as a centrifugal brake is provided for slowing the rotation of either of said front and rear wheels and for keeping the rotation speed in a constant speed.Travelling wheels are rotatably provided on the frame for moving the carrier on a flat surface.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: August 25, 1987
    Assignee: Sunwa Sharyo Manufacturing Co., Ltd.
    Inventors: Rintaro Misawa, Kou Takahashi
  • Patent number: 4585241
    Abstract: A carrier for rescuing patients having a frame having a pair of lower horizontal portions and upwardly inclined portions adjacent to the horizontal portions at rear end portions thereof.A pair of front and rear wheels are provided on the frame, and a pair of crawlers engaged with the frame and wheels to be moved on the frame and around the wheels.A seat having a handle is provided on the frame. A brake such as a centrifugal brake is provided for slowing the rotation of either of said front and rear wheels and for keeping the rotation speed in a constant speed.Travelling wheels are rotatably provided on the frame for moving the carrier on a flat surface.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: April 29, 1986
    Assignee: Sunwa Sharyo Manufacturing Co., Ltd.
    Inventors: Rintaro Misawa, Kou Takahashi