Patents by Inventor Kenzou Takahashi

Kenzou 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).

  • Publication number: 20140029165
    Abstract: Provided is an electric double-layer capacitor excellent in long-term reliability, particularly in suppressing its expansion, and a non-aqueous electrolytic solution for the electric double-layer capacitor.
    Type: Application
    Filed: March 29, 2012
    Publication date: January 30, 2014
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kenzou Takahashi, Meiten Koh, Hideo Sakata, Emi Yamamoto
  • Publication number: 20130222976
    Abstract: The present invention provides an electric double layer capacitor having a high withstanding voltage, less deterioration, and excellent long-term reliability, especially an effect of suppressing expansion. The present invention relates to an electrolyte solution for an electric double layer capacitor. The solution comprises an electrolyte-salt-dissolving solvent (I) and an electrolyte salt (II). The electrolyte-salt-dissolving solvent (I) contains a fluorine-containing chain ether and a nitrile compound.
    Type: Application
    Filed: October 21, 2011
    Publication date: August 29, 2013
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kenzou Takahashi, Meiten Koh, Mai Koyama, Emi Yamamoto
  • Publication number: 20130143117
    Abstract: The present invention provides a conductive protective layer-forming paste for current collector laminates which can be used even for high voltage designs to protect current collectors from corroding without loss of cell characteristics, and a current collector laminate, an electrode laminate, and nonaqueous secondary cells (e.g. a lithium secondary cell, an electric double layer capacitor) that include a conductive protective layer formed therefrom. The paste for forming conductive protective layers for current collector protection includes: polytetrafluoroethylene; and a conductive filler (b). The current collector laminate includes: a conductive protective layer (A); and a current collector (B), the conductive protective layer (A) being formed by coating the paste for forming conductive protective layers onto the current collector (B).
    Type: Application
    Filed: September 16, 2011
    Publication date: June 6, 2013
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Meiten Koh, Hideo Sakata, Tomoyo Sanagi, Hitomi Nakazawa, Hiroyuki Arima, Toshiki Ichisaka, Kenzou Takahashi
  • Publication number: 20120243145
    Abstract: An object of the present invention is to provide an electric double layer capacitor which has a high withstand voltage, and is resistant to degradation and excellent in long term reliability. Disclosed is an electrolytic solution for an electric double layer capacitor including a solvent (I) for dissolving an electrolyte salt and an electrolyte salt (II), wherein the solvent (I) for dissolving an electrolyte salt includes a sulfolane compound and a fluorine-containing chain ether. Also disclosed is an electric double layer capacitor using the electrolytic solution.
    Type: Application
    Filed: November 26, 2010
    Publication date: September 27, 2012
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kenzou Takahashi, Meiten Koh, Mai Koyama, Emi Miyanaga
  • Publication number: 20120107689
    Abstract: The present invention provides a binder composition for an electrode. The binder composition includes PTFE particles as primary particles uniformly dispersed in an organic solvent at a high concentration. The present invention relates to a binder composition for an electrode, comprising an organosol composition containing PTFE particles (A), a polymer (B), and a fluorine-free organic solvent (C); and no electrode active material (J), wherein the polymer (B) is soluble in the fluorine-free organic solvent (C).
    Type: Application
    Filed: May 9, 2011
    Publication date: May 3, 2012
    Applicant: DAIKIN INDUSTRIES BUILDING
    Inventors: Kenzou Takahashi, Mai Koyama, Emi Miyanaga, Meiten Koh, Hideo Sakata, Hiroyuki Arima, Tomoyo Sanagi, Hitomi Nakazawa, Takuji Ishikawa, Atsuko Tanaka, Toshiki Ichisaka
  • Publication number: 20110304950
    Abstract: An electric double layer capacitor includes a pair of collectors, a separator, a conductive coating film, a polarizable electrode, and an electrolyte solution. The separator is arranged between the collectors. The conductive coating film covers a surface of at least one of the collectors facing the separator. The polarizable electrode is formed as to be in contact with at least a surface of the conductive coating film facing the separator. Preferably, electrolyte solution has a fluorine-containing organic solvent, and is impregnated into the polarizable electrode. Preferably, the capacitor enables an operating voltage of 3.5 V or higher.
    Type: Application
    Filed: February 25, 2010
    Publication date: December 15, 2011
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keisuke Ohtsuka, Kenzou Takahashi, Mai Koyama
  • Publication number: 20110216477
    Abstract: The present invention provides an electric double layer capacitor that has a high withstand voltage, is more resistant to degradation, and also has good cycle characteristics. The present invention relates to an electrolytic solution for an electric double layer capacitor, comprising: (I) a solvent for dissolving an electrolyte salt; and (II) an electrolyte salt, wherein the solvent (I) for dissolving an electrolyte salt includes propylene carbonate and at least one selected from the group consisting of a fluorine-containing chain carbonate and a fluorine-containing chain ether. The present invention also relates to an electric double layer capacitor comprising the electrolytic solution.
    Type: Application
    Filed: October 26, 2009
    Publication date: September 8, 2011
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kenzou Takahashi, Meiten Koh, Mai Koyama
  • Publication number: 20080210412
    Abstract: A heat exchanger for realizing a high degree of humidity exchange efficiency at a low cost. The heat exchanger in which partition members respectively separated from each other by a spacing maintained by one of spacing members facilitate circulation of two different air flows, with total enthalpy heat exchange occurring between these two air flows via the partition members. The partition members comprise an air shielding sheet type material comprising a hydrophilic fiber and also including a moisture absorbent, and the air permeability (JIS P 8117) of the partition members is at least 200 seconds/100 cc.
    Type: Application
    Filed: January 25, 2008
    Publication date: September 4, 2008
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Hidemoto Arai, Kenzou Takahashi, Youichi Sugiyama
  • Patent number: 7320361
    Abstract: A known heat exchanger has a lower rate of blocking the movement of moisture through the joint as compared to a joint bonded with a moisture impermeable adhesive because the corrugated and flat substrates are bonded with thermoplastic fibers by performing heating and pressurizing treatments, but has insufficient moisture permeability because both the flat substrate, which is a partition, and the corrugated substrate, which is a space retaining plate, have a poor moisture permeability. In a heat exchanger in which two types of air flows are directed across a moisture permeable partition plate spaced apart from an adjacent partition plate by a space retaining plate, and perform heat exchange between them through the partition plate, a joint is formed by bonding the partition plate and the space retaining plate using fluoro-resin or hydrocarbon resin containing a hydrophilic group to provide an excellent moisture absorption and diffusion property.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: January 22, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hidemoto Arai, Hisao Yokoya, Kenzou Takahashi, Youichi Sugiyama, Masaru Takada, Masataka Yoshino
  • Publication number: 20070095513
    Abstract: A known heat exchanger has a lower rate of blocking the movement of moisture through the joint as compared to a joint bonded with a moisture impermeable adhesive because the corrugated and flat substrates are bonded with thermoplastic fibers by performing heating and pressurizing treatments, but has insufficient moisture permeability because both the flat substrate, which is a partition, and the corrugated substrate, which is a space retaining plate, have a poor moisture permeability. In a heat exchanger in which two types of air flows are directed across a moisture permeable partition plate spaced apart from an adjacent partition plate by a space retaining plate, and perform heat exchange between them through the partition plate, a joint is formed by bonding the partition plate and the space retaining plate using fluoro-resin or hydrocarbon resin containing a hydrophilic group to provide an excellent moisture absorption and diffusion property.
    Type: Application
    Filed: October 28, 2005
    Publication date: May 3, 2007
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hidemoto Arai, Hisao Yokoya, Kenzou Takahashi, Youichi Sugiyama, Masaru Takada, Masataka Yoshino
  • Patent number: 7188665
    Abstract: A heat exchanger for realizing a high degree of humidity exchange efficiency at a low cost. The heat exchanger in which partition members respectively separated from each other by a spacing maintained by one of spacing members facilitate circulation of two different air flows, with total enthalpy heat exchange occurring between these two air flows via the partition members. The partition members comprise an air shielding sheet type material comprising a hydrophilic fiber and also including a moisture absorbent, and the air permeability (JIS P 8117) of the partition members is at least 200 seconds/100 cc.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: March 13, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hidemoto Arai, Kenzou Takahashi, Youichi Sugiyama
  • Publication number: 20060168813
    Abstract: A heat exchanger for realizing a high degree of humidity exchange efficiency at a low cost. The heat exchanger in which partition members respectively separated from each other by a spacing maintained by one of spacing members facilitate circulation of two different air flows, with total enthalpy heat exchange occurring between these two air flows via the partition members. The partition members comprise an air shielding sheet type material comprising a hydrophilic fiber and also including a moisture absorbent, and the air permeability (JIS P 8117) of the partition members is at least 200 seconds/100 cc.
    Type: Application
    Filed: March 29, 2006
    Publication date: August 3, 2006
    Inventors: Hidemoto Arai, Kenzou Takahashi, Youichi Sugiyama
  • Publication number: 20030094269
    Abstract: A heat exchanger for realizing a high degree of humidity exchange efficiency at a low cost. The heat exchanger in which partition members respectively separated from each other by a spacing maintained by one of spacing members facilitate circulation of two different air flows, with total enthalpy heat exchange occurring between these two air flows via the partition members. The partition members comprise an air shielding sheet type material comprising a hydrophilic fiber and also including a moisture absorbent, and the air permeability (JIS P 8117) of the partition members is at least 200 seconds/100 cc.
    Type: Application
    Filed: July 8, 2002
    Publication date: May 22, 2003
    Inventors: Hidemoto Arai, Kenzou Takahashi, Youichi Sugiyama