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).
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Patent number: 10505195Abstract: 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: GrantFiled: June 23, 2015Date of Patent: December 10, 2019Assignee: JSR CORPORATIONInventors: Shinsaku Ugawa, Tatsuaki Honda, Yoshiharu Otsuka, Takuya Nakayama, Daisuke Sukeguchi
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Publication number: 20170149064Abstract: 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: ApplicationFiled: June 23, 2015Publication date: May 25, 2017Applicant: JSR CORPORATIONInventors: Shinsaku UGAWA, Tatsuaki HONDA, Yoshiharu OTSUKA, Takuya NAKAYAMA, Daisuke SUKEGUCHI
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Patent number: 9583278Abstract: 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: GrantFiled: June 13, 2013Date of Patent: February 28, 2017Assignee: JSR CORPORATIONInventors: Hiroyuki Miyauchi, Tatsuya Abe, Shinsaku Ugawa, Kouji Sumiya, Yingjia Xu, Maki Maegawa, Hironori Kitaguchi
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Publication number: 20150187516Abstract: 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: ApplicationFiled: June 13, 2013Publication date: July 2, 2015Applicant: JSR CORPORATIONInventors: Hiroyuki Miyauchi, Tatsuya Abe, Shinsaku Ugawa, Kouji Sumiya, Yingjia Xu, Maki Maegawa, Hironori Kitaguchi
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Publication number: 20140023900Abstract: 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: ApplicationFiled: September 23, 2013Publication date: January 23, 2014Applicant: Sony CorporationInventors: Karin Tsuda, Shinsaku Ugawa, Akira Ichihashi, Kazuo Honda
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Patent number: 8178237Abstract: 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: GrantFiled: February 25, 2009Date of Patent: May 15, 2012Assignee: Sony CorporationInventor: Shinsaku Ugawa
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Patent number: 7824810Abstract: 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: GrantFiled: June 8, 2006Date of Patent: November 2, 2010Assignee: Sony CorporationInventors: Shinsaku Ugawa, Yoshikatsu Yamamoto
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Patent number: 7767350Abstract: 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: GrantFiled: January 24, 2003Date of Patent: August 3, 2010Assignee: Sony CorporationInventors: Shinsaku Ugawa, Tokio Kuwada
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Publication number: 20090214949Abstract: 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: ApplicationFiled: February 25, 2009Publication date: August 27, 2009Applicant: SONY CORPORATIONInventor: Shinsaku Ugawa
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Publication number: 20070224503Abstract: 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: ApplicationFiled: March 23, 2007Publication date: September 27, 2007Applicant: Sony CorporationInventors: Karin Tsuda, Shinsaku Ugawa, Akira Ichihashi, Kazuo Honda
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Patent number: 7169512Abstract: 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: GrantFiled: April 6, 2004Date of Patent: January 30, 2007Assignee: Sony CorporationInventor: Shinsaku Ugawa
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Publication number: 20060281012Abstract: 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: ApplicationFiled: June 8, 2006Publication date: December 14, 2006Inventors: Shinsaku Ugawa, Yoshikatsu Yamamoto
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Patent number: 7063916Abstract: 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: GrantFiled: March 3, 2004Date of Patent: June 20, 2006Assignee: Sony CorporationInventors: Shinsaku Ugawa, Hironobu Fukahori
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Publication number: 20050118513Abstract: 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: ApplicationFiled: November 9, 2004Publication date: June 2, 2005Inventor: Shinsaku Ugawa
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Publication number: 20040265700Abstract: 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: ApplicationFiled: March 3, 2004Publication date: December 30, 2004Inventors: Shinsaku Ugawa, Hironobu Fukahori
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Publication number: 20040202941Abstract: 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: ApplicationFiled: April 6, 2004Publication date: October 14, 2004Applicant: Sony CorporationInventor: Shinsaku Ugawa
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Publication number: 20030170550Abstract: 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: ApplicationFiled: January 24, 2003Publication date: September 11, 2003Inventors: Shinsaku Ugawa, Tokio Kuwada