Patents by Inventor Shinsaku Ugawa

Shinsaku Ugawa 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: 10505195
    Abstract: The present invention provides an electrical storage device binder composition that can produce an electrode that achieves improved charge-discharge characteristics. The composition includes a polymer (A) and a liquid medium (B), and further includes particles having a particle size of 10 to 50 micrometers in a number of 1,000 to 100,000 per mL.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: December 10, 2019
    Assignee: JSR CORPORATION
    Inventors: Shinsaku Ugawa, Tatsuaki Honda, Yoshiharu Otsuka, Takuya Nakayama, Daisuke Sukeguchi
  • Publication number: 20170149064
    Abstract: The present invention provides an electrical storage device binder composition that can produce an electrode that achieves improved charge-discharge characteristics. The composition includes a polymer (A) and a liquid medium (B), and further includes particles having a particle size of 10 to 50 micrometers in a number of 1,000 to 100,000 per mL.
    Type: Application
    Filed: June 23, 2015
    Publication date: May 25, 2017
    Applicant: JSR CORPORATION
    Inventors: Shinsaku UGAWA, Tatsuaki HONDA, Yoshiharu OTSUKA, Takuya NAKAYAMA, Daisuke SUKEGUCHI
  • Patent number: 9583278
    Abstract: An electrical storage device electrode binder composition containing a polymer (A) and a liquid medium (B). A repeating unit (A4) derived from an unsaturated carboxylic acid compound is included in the polymer (A) in an amount of 5-40 parts by mass based on 100 parts by mass of the total repeating units in polymer (A). The polymer (A) is in particle form, and the polymer particles have a surface acid content of 1-6 mmol/g.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: February 28, 2017
    Assignee: JSR CORPORATION
    Inventors: Hiroyuki Miyauchi, Tatsuya Abe, Shinsaku Ugawa, Kouji Sumiya, Yingjia Xu, Maki Maegawa, Hironori Kitaguchi
  • Publication number: 20150187516
    Abstract: An electrical storage device electrode binder composition includes a polymer (A) and a liquid medium (B), the polymer (A) including a repeating unit (A4) derived from an unsaturated carboxylic acid in an amount of 5 to 40 parts by mass based on 100 parts by mass of the total repeating units included in the polymer (A), the polymer (A) being polymer particles, and the polymer particles having a surface acid content of more than 1 mmol/g and 6 mmol/g or less.
    Type: Application
    Filed: June 13, 2013
    Publication date: July 2, 2015
    Applicant: JSR CORPORATION
    Inventors: Hiroyuki Miyauchi, Tatsuya Abe, Shinsaku Ugawa, Kouji Sumiya, Yingjia Xu, Maki Maegawa, Hironori Kitaguchi
  • Publication number: 20140023900
    Abstract: A secondary battery is provided. The secondary battery includes a positive electrode having a positive electrode active material layer provided on a positive electrode current collector, a negative electrode having a negative electrode active material layer provided on a negative electrode current collector, and an electrolyte, in which the positive electrode and the negative electrode are stacked and rolled up while placing a separator in between. A sum (A+B) of a total thickness “A” of the positive electrode current collector and the positive electrode active material layer, and a total thickness “B” of the negative electrode current collector and the negative electrode active material layer ranges from 161 ?m to 220 ?m. A ratio (A/B) of the total thickness “A” to the total thickness “B” ranges from 0.65 to 1.9.
    Type: Application
    Filed: September 23, 2013
    Publication date: January 23, 2014
    Applicant: Sony Corporation
    Inventors: Karin Tsuda, Shinsaku Ugawa, Akira Ichihashi, Kazuo Honda
  • Patent number: 8178237
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the negative electrode contains a negative electrode mixture containing a binder; and the binder contains polyvinylidene fluoride and polyacrylonitrile, with a mass ratio of polyvinylidene fluoride to polyacrylonitrile ranging from 99.9/0.1 to 95.1/4.9.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: May 15, 2012
    Assignee: Sony Corporation
    Inventor: Shinsaku Ugawa
  • Patent number: 7824810
    Abstract: An electrolytic solution capable of inhibiting self-discharge even under the high temperatures and a battery using the electrolytic solution are provided. A spirally wound electrode body in which a cathode and an anode are wound with a separator in between and spirally wound is included inside the battery can. An electrolytic solution is impregnated in the separator. The electrolytic solution contains ethylene sulfite, vinylene carbonate, LiPF6, and a light metal salt such as lithium difluoro[oxalato-O,O?]borate in a given range. Thereby, the self-discharge can be inhibited even under the high temperatures.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: November 2, 2010
    Assignee: Sony Corporation
    Inventors: Shinsaku Ugawa, Yoshikatsu Yamamoto
  • Patent number: 7767350
    Abstract: A nonaqueous electrolyte battery includes: a cathode using a composite compound of lithium and transition metals as a positive active material; an anode using a negative active material capable of being doped with and doped from lithium; and a nonaqueous electrolyte interposed between the cathode and the anode. The nonaqueous electrolyte is obtained by dissolving LiMFm (M is an element selected from As, B, P and Sb, and m is an integer located within a range of 4 to 6.) and LiCnF2n+1 SO3 or LiN(CnF2n+1SO2)2 in a nonaqueous solvent including cyclic carbonate or non cyclic carbonate and having unsaturated carbonate added within a range of 0.1 volume % or more and 5 volume % or less, and the concentration of LiCnF2n+1SO3 or LiN(CnF2n+1SO2)2 is located within a range of 1 wt % or more and lower than 10 wt %. Thus, a self-discharge is suppressed and a storage property is improved.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: August 3, 2010
    Assignee: Sony Corporation
    Inventors: Shinsaku Ugawa, Tokio Kuwada
  • Publication number: 20090214949
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the negative electrode contains a negative electrode mixture containing a binder; and the binder contains polyvinylidene fluoride and polyacrylonitrile, with a mass ratio of polyvinylidene fluoride to polyacrylonitrile ranging from 99.9/0.1 to 95.1/4.9.
    Type: Application
    Filed: February 25, 2009
    Publication date: August 27, 2009
    Applicant: SONY CORPORATION
    Inventor: Shinsaku Ugawa
  • Publication number: 20070224503
    Abstract: A secondary battery is provided. The secondary battery includes a positive electrode having a positive electrode active material layer provided on a positive electrode current collector, a negative electrode having a negative electrode active material layer provided on a negative electrode current collector, and an electrolyte, in which the positive electrode and the negative electrode are stacked and rolled up while placing a separator in between. A sum (A+B) of a total thickness “A” of the positive electrode current collector and the positive electrode active material layer, and a total thickness “B” of the negative electrode current collector and the negative electrode active material layer ranges from 161 ?m to 220 ?m. A ratio (A/B) of the total thickness “A” to the total thickness “B” ranges from 0.65 to 1.9.
    Type: Application
    Filed: March 23, 2007
    Publication date: September 27, 2007
    Applicant: Sony Corporation
    Inventors: Karin Tsuda, Shinsaku Ugawa, Akira Ichihashi, Kazuo Honda
  • Patent number: 7169512
    Abstract: The invention provides an electrolytic solution and a battery, which can sufficiently improve cycle characteristics. The battery comprises an electrode winding body, wherein a cathode and an anode are layered and wound sandwiching a separator inside a battery can. The electrolytic solution is impregnated in the separator. The electrolytic solution contains a high dielectric constant solvent comprised of at least either ethylene carbonate or propylene carbonate; dimethyl carbonate; and diphenyl carbonate at a mass ratio of 5 to 40:58 to 93: more than 0 to 5.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: January 30, 2007
    Assignee: Sony Corporation
    Inventor: Shinsaku Ugawa
  • Publication number: 20060281012
    Abstract: An electrolytic solution capable of inhibiting self-discharge even under the high temperatures and a battery using the electrolytic solution are provided. A spirally wound electrode body in which a cathode and an anode are wound with a separator in between and spirally wound is included inside the battery can. An electrolytic solution is impregnated in the separator. The electrolytic solution contains ethylene sulfite, vinylene carbonate, LiPF6, and a light metal salt such as lithium difluoro[oxalato-O,O?] borate in a given range. Thereby, the self-discharge can be inhibited even under the high temperatures.
    Type: Application
    Filed: June 8, 2006
    Publication date: December 14, 2006
    Inventors: Shinsaku Ugawa, Yoshikatsu Yamamoto
  • Patent number: 7063916
    Abstract: The invention provides a battery, which can improve a capacity and cycle characteristics. The battery comprises an electrode winding body, wherein a cathode and an anode are layered and wound with a separator in between inside a battery can. An electrolytic solution is impregnated in the separator. The electrolytic solution contains propylene carbonate, ethylene carbonate, a low viscosity solvent such as dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate, a carbonic acid ester of an unsaturated compound such as vinylethylene carbonate and vinylene carbonate, and a lithium salt. A content of the propylene carbonate is from 5 wt % to 20 wt %, and a content of the carbonic acid ester is from 0.3 wt % to 3 wt %.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: June 20, 2006
    Assignee: Sony Corporation
    Inventors: Shinsaku Ugawa, Hironobu Fukahori
  • Publication number: 20050118513
    Abstract: The invention provides a battery coverable of inhibiting self-discharge even when the battery is left under the circumstances of high temperatures and an electrolyte used for the battery. An electrode winding body in which a cathode and an anode are layered and wound with a separator in between is provided inside a battery can. An electrolytic solution is impregnated in the separator. The electrolytic solution contains at least one of compounds having structures shown below and an ionic liquid shown below.
    Type: Application
    Filed: November 9, 2004
    Publication date: June 2, 2005
    Inventor: Shinsaku Ugawa
  • Publication number: 20040265700
    Abstract: The invention provides a battery, which can improve a capacity and cycle characteristics. The battery comprises an electrode winding body, wherein a cathode and an anode are layered and wound with a separator in between inside a battery can. An electrolytic solution is impregnated in the separator. The electrolytic solution contains propylene carbonate, ethylene carbonate, a low viscosity solvent such as dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate, a carbonic acid ester of an unsaturated compound such as vinylethylene carbonate and vinylene carbonate, and a lithium salt. A content of the propylene carbonate is from 5 wt % to 20 wt %, and a content of the carbonic acid ester is from 0.3 wt % to 3 wt %.
    Type: Application
    Filed: March 3, 2004
    Publication date: December 30, 2004
    Inventors: Shinsaku Ugawa, Hironobu Fukahori
  • Publication number: 20040202941
    Abstract: The invention provides an electrolytic solution and a battery, which can sufficiently improve cycle characteristics. The battery comprises an electrode winding body, wherein a cathode and an anode are layered and wound sandwiching a separator inside a battery can. The electrolytic solution is impregnated in the separator. The electrolytic solution contains a high dielectric constant solvent comprised of at least either ethylene carbonate or propylene carbonate; dimethyl carbonate; and diphenyl carbonate at a mass ratio of 5 to 40:58 to 93: more than 0 to 5.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Applicant: Sony Corporation
    Inventor: Shinsaku Ugawa
  • Publication number: 20030170550
    Abstract: A nonaqueous electrolyte battery includes: a cathode using a composite compound of lithium and transition metals as a positive active material; an anode using a negative active material capable of being doped with and doped from lithium; and a nonaqueous electrolyte interposed between the cathode and the anode. The nonaqueous electrolyte is obtained by dissolving LiMFm (M is an element selected from As, B, P and Sb, and m is an integer located within a range of 4 to 6.) and LiCnF2n+1SO3 or LiN(CnF2n+1SO2)2 in a nonaqueous solvent including cyclic carbonate or non cyclic carbonate and having unsaturated carbonate added within a range of 0.1 volume % or more and 5 volume % or less and the concentration of LiCnF2n+1SO3 or LiN(CnF2n+1SO2)2 is located within a range of 1 wt % or more and lower than 10 wt %. Thus, a self-discharge is suppressed and a storage property is improved.
    Type: Application
    Filed: January 24, 2003
    Publication date: September 11, 2003
    Inventors: Shinsaku Ugawa, Tokio Kuwada