Patents by Inventor Yuko Hayakawa
Yuko Hayakawa 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: 11594758Abstract: A secondary battery capable of improving cycle characteristics, conservation characteristics, and load characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with an electrolytic solution. The electrolytic solution includes one or more of a dicarbonic ester compound, a dicarboxylic compound, a disulfonic compound, a monofluoro lithium phosphate, and difluoro lithium phosphate and one or more of fluorinated lithium phosphate, fluorinated lithium borate, and imide lithium.Type: GrantFiled: October 10, 2017Date of Patent: February 28, 2023Assignee: Murata Manufacturing Co., Ltd.Inventors: Masayuki Ihara, Yuko Hayakawa, Tadahiko Kubota
-
Publication number: 20210363012Abstract: A negative thermal expansion material having a negative thermal expansion coefficient according to the present invention is represented by Zr2-aMaSxP2O12+?, where M is at least one selected from Ti, Ce, Sn, Mn, Hf, Ir, Pb, Pd, and Cr; a is 0?a<2; x is 0.4?x?1; and ? is a value defined as to satisfy a charge neutral condition. The present invention makes it possible to provide a negative thermal expansion material, a composite material and a method for producing a negative thermal expansion material that can realize reduction in cost and density reduction.Type: ApplicationFiled: February 26, 2019Publication date: November 25, 2021Inventors: Toshihiro ISOBE, Yuko HAYAKAWA, Yuri ADACHI, Ryosuke UEHARA
-
Patent number: 9912013Abstract: Secondary batteries capable of improving cycle characteristics are provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2-O—S(?O)2-) and at least one of a nitrile compound. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: GrantFiled: September 8, 2016Date of Patent: March 6, 2018Assignee: Murata Manufacturing Co., LTD.Inventors: Yuko Hayakawa, Tadahiko Kubota, Masayuki Ihara
-
Publication number: 20180048026Abstract: A secondary battery capable of improving cycle characteristics, conservation characteristics, and load characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with an electrolytic solution. The electrolytic solution includes one or more of a dicarbonic ester compound, a dicarboxylic compound, a disulfonic compound, a monofluoro lithium phosphate, and difluoro lithium phosphate and one or more of fluorinated lithium phosphate, fluorinated lithium borate, and imide lithium.Type: ApplicationFiled: October 10, 2017Publication date: February 15, 2018Inventors: Masayuki Ihara, Yuko Hayakawa, Tadahiko Kubota
-
Patent number: 9806377Abstract: A secondary battery capable of improving cycle characteristics, conservation characteristics, and load characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with an electrolytic solution. The electrolytic solution includes one or more of a dicarbonic ester compound, a dicarboxylic compound, a disulfonic compound, a monofluoro lithium phosphate, and difluoro lithium phosphate and one or more of fluorinated lithium phosphate, fluorinated lithium borate, and imide lithium.Type: GrantFiled: December 2, 2010Date of Patent: October 31, 2017Assignee: Sony CorporationInventors: Masayuki Ihara, Yuko Hayakawa, Tadahiko Kubota
-
Publication number: 20170098860Abstract: Secondary batteries capable of improving cycle characteristics are provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2-O—S(?O)2-) and at least one of a nitrile compound. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: ApplicationFiled: September 8, 2016Publication date: April 6, 2017Inventors: YUKO HAYAKAWA, TADAHIKO KUBOTA, MASAYUKI IHARA
-
Patent number: 9450273Abstract: Secondary batteries capable of improving cycle characteristics are provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2—O—S(?O)2—) and at least one of a nitrile compound. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: GrantFiled: July 8, 2015Date of Patent: September 20, 2016Assignee: SONY CORPORATIONInventors: Yuko Hayakawa, Tadahiko Kubota, Masayuki Ihara
-
Publication number: 20150311566Abstract: Secondary batteries capable of improving cycle characteristics are provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2—O—S(?O)2—) and at least one of a nitrile compound. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: ApplicationFiled: July 8, 2015Publication date: October 29, 2015Inventors: Yuko HAYAKAWA, Tadahiko KUBOTA, Masayuki IHARA
-
Patent number: 9083059Abstract: A secondary battery capable of improving cycle characteristics is provided. The secondary battery includes a cathode 21, an anode 22, and an electrolytic solution. A separator 23 provided between the cathode 21 and the anode 22 is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2—O—S(?O)2—) and succinonitrile. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: GrantFiled: March 18, 2010Date of Patent: July 14, 2015Assignee: SONY CORPORATIONInventors: Yuko Hayakawa, Tadahiko Kubota, Masayuki Ihara
-
Publication number: 20130052543Abstract: A secondary battery capable of improving cycle characteristics, conservation characteristics, and load characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with an electrolytic solution. The electrolytic solution includes one or more of a dicarbonic ester compound, a dicarboxylic compound, a disulfonic compound, a monofluoro lithium phosphate, and difluoro lithium phosphate and one or more of fluorinated lithium phosphate, fluorinated lithium borate, and imide lithium.Type: ApplicationFiled: December 2, 2010Publication date: February 28, 2013Applicant: Sony CorporationInventors: Masayuki Ihara, Yuko Hayakawa, Tadahiko Kubota
-
Publication number: 20120009486Abstract: A secondary battery capable of improving cycle characteristics is provided. The secondary battery includes a cathode 21, an anode 22, and an electrolytic solution. A separator 23 provided between the cathode 21 and the anode 22 is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2—O—S(?O)2—) and succinonitrile. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: ApplicationFiled: March 18, 2010Publication date: January 12, 2012Applicant: SONY CORPORATIONInventors: Yuko Hayakawa, Tadahiko Kubota, Masayuki Ihara
-
Publication number: 20110274987Abstract: A secondary battery capable of improving the cycle characteristics and the storage characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution containing a nonaqueous solvent and an electrolyte salt. The nonaqueous solvent contains cyclic polyester obtained by dehydrating and condensing two or more divalent carboxylic acid and one or more divalent alcohol.Type: ApplicationFiled: March 25, 2011Publication date: November 10, 2011Applicant: SONY CORPORATIONInventors: Masayuki Ihara, Yuko Hayakawa, Tadahiko Kubota