Patents by Inventor Keiko Takeuchi
Keiko Takeuchi 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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Publication number: 20240128496Abstract: An all-solid-state secondary battery includes a laminate which includes a plurality of positive electrode layers each having a positive electrode active material layer, a plurality of negative electrode layers each having a negative electrode active material layer, and a plurality of solid electrolyte layers each containing a solid electrolyte, and in which the positive electrode layers and the negative electrode layers are alternately laminated with the solid electrolyte layers interposed therebetween, and the plurality of solid electrolyte layers include an outermost solid electrolyte layer disposed on both end sides of the laminate in a lamination direction and being thinnest among the plurality of solid electrolyte layers, and an inner solid electrolyte layer disposed inward relative to the outermost solid electrolyte layer and being thicker than the outermost solid electrolyte layer.Type: ApplicationFiled: March 18, 2022Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Keiko TAKEUCHI, Kazumasa TANAKA, Keitaro OTSUKI
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Publication number: 20240128516Abstract: An all-solid-state secondary battery includes a laminate which includes a plurality of positive electrode layers each having a positive electrode active material layer, a plurality of negative electrode layers each having a negative electrode active material layer, and a plurality of solid electrolyte layers each containing a solid electrolyte, and wherein the positive and negative electrode layers are alternately laminated with the solid electrolyte layers interposed therebetween, wherein the plurality of solid electrolyte layers includes a first and a second outer solid electrolyte layer disposed on both end portion sides of the laminate in a lamination direction, and an inner solid electrolyte layer disposed between the first and second outer solid electrolyte layers, and both the first and second outer solid electrolyte layers are a thick-film outer solid electrolyte layer having a thickness more than that of the inner solid electrolyte layer.Type: ApplicationFiled: March 23, 2022Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Keiko TAKEUCHI, Kazumasa TANAKA, Keitaro OTSUKI
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Patent number: 11881561Abstract: An all-solid-state secondary battery includes: a positive electrode active material layer; a negative electrode active material layer; and a solid electrolyte layer located between the positive electrode active material layer and the negative electrode active material layer, wherein at least one of the positive electrode active material layer and the negative electrode active material layer contains lithium vanadium phosphate, the solid electrolyte layer contains lithium zirconium phosphate, and between the positive electrode active material layer or the negative electrode active material layer containing lithium vanadium phosphate and the solid electrolyte layer, a first intermediate layer, which contains lithium vanadium phosphate containing zirconium and is located on the side of the positive electrode active material layer or the negative electrode active material layer, and a second intermediate layer, which contains lithium zirconium phosphate containing vanadium and is located on the side of the solidType: GrantFiled: March 22, 2019Date of Patent: January 23, 2024Assignee: TDK CORPORATIONInventors: Keiko Takeuchi, Tetsuya Ueno, Gakuho Isomichi
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Publication number: 20230064294Abstract: A laminated all-solid-state battery includes a laminate having positive electrode and positive electrode active material layers, negative electrode layers having negative electrode current collector and negative electrode active material layers, and solid electrolyte layers. The positive and negative electrode layers are alternately laminated with the solid electrolyte layers interposed. The solid electrolyte layers include solid electrolyte layers belonging to first and second groups, the second thicker than the first. The first group includes a first solid electrolyte layer being thinnest. The second group is composed of a second solid electrolyte layer having a thickness of twice or more that of the first. A relationship (1) is satisfied when an average thickness of the plurality of solid electrolyte layers belonging to the first group is defined as ta and an average thickness of the solid electrolyte layers belonging to the second group is defined as tb; 2ta?tb . . . (1).Type: ApplicationFiled: December 25, 2020Publication date: March 2, 2023Applicant: TDK CORPORATIONInventors: Kazumasa TANAKA, Teiichi TANAKA, Keiko TAKEUCHI
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Publication number: 20220399568Abstract: A solid electrolyte layer having a solid electrolyte and carbon, in which a dispersion degree (CV value) of the carbon measured by a quadrat method in a cross section of the solid electrolyte layer is more than zero and less than one.Type: ApplicationFiled: November 11, 2020Publication date: December 15, 2022Applicant: TDK CORPORATIONInventors: Tomoko NAKAMURA, Hisashi SUZUKI, Keiko TAKEUCHI
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Patent number: 11254573Abstract: A lithium ion-conducting solid electrolyte containing at least one metallic element selected from the group made of Zn, Ca, Mg, and Cu within a range of 0.01% by mass to 3.0% by mass, and a solid-state lithium ion rechargeable battery containing this lithium ion-conducting solid electrolyte.Type: GrantFiled: September 25, 2017Date of Patent: February 22, 2022Assignee: TDK CORPORATIONInventors: Hiroshi Sato, Masahiro Oishi, Taisuke Masuko, Tomohiro Yano, Keiko Takeuchi
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Publication number: 20210043978Abstract: An all-solid-state secondary battery includes: a positive electrode active material layer; a negative electrode active material layer; and a solid electrolyte layer located between the positive electrode active material layer and the negative electrode active material layer, wherein at least one of the positive electrode active material layer and the negative electrode active material layer contains lithium vanadium phosphate, the solid electrolyte layer contains lithium zirconium phosphate, and between the positive electrode active material layer or the negative electrode active material layer containing lithium vanadium phosphate and the solid electrolyte layer, a first intermediate layer, which contains lithium vanadium phosphate containing zirconium and is located on the side of the positive electrode active material layer or the negative electrode active material layer, and a second intermediate layer, which contains lithium zirconium phosphate containing vanadium and is located on the side of the solidType: ApplicationFiled: March 22, 2019Publication date: February 11, 2021Applicant: TDK CORPORATIONInventors: Keiko TAKEUCHI, Tetsuya UENO, Gakuho ISOMICHI
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Publication number: 20210036362Abstract: An all-solid-state battery includes a positive electrode current collector layer; a positive electrode active material layer; a negative electrode current collector layer; a negative electrode active material layer; a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer and formed of a solid electrolyte; and at least one of a first intermediate layer formed between the positive electrode current collector layer and the positive electrode active material layer, and a second intermediate layer formed between the negative electrode current collector layer and the negative electrode active material layer.Type: ApplicationFiled: March 27, 2019Publication date: February 4, 2021Applicant: TDK CORPORATIONInventors: Tetsuya UENO, Gakuho ISOMICHI, Keiko TAKEUCHI
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Patent number: 10777354Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00?s?tBasCat)6.00?xRx(Ti1.00?aZra)x+2.00(Nb1.00?bTab)8.00?xO30.00 in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50?s?1.00, 0?t?0.50, 0.50?s+t?1.00, 0.50<x?1.50, 0.30?a?1.00, and 0?b?1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: GrantFiled: March 6, 2017Date of Patent: September 15, 2020Assignee: TDK CORPORATIONInventors: Sanshiro Aman, Hiroki Akiba, Keiko Takeuchi
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Patent number: 10777355Abstract: [Object] provide a dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. [Solving Means] A dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00?s?tBasCat)6.00?xRx(Ti1.00?aZra)x+2.00(Nb1.00?bTab)8.00?xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.70?s?1.00, 0?t?0.30, 0.70?s+t?1.00, 0?x?0.50, 0.10?a?1.00, and 0?h?1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: GrantFiled: March 6, 2017Date of Patent: September 15, 2020Assignee: TDK CORPORATIONInventors: Sanshiro Aman, Hiroki Akiba, Keiko Takeuchi
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Patent number: 10759709Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00-(s+t)BasCat)6.00-xRx(Ti1.00-aZra)x+2.00(Nb1.00-bTab)8.00-xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50?s?1.00, 0?t?0.30, 0.50?s+t?1.00, 1.50<x?3.00, 0.20?a?1.00, and 0?b?1.00. At least one selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al is contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: GrantFiled: March 6, 2017Date of Patent: September 1, 2020Assignee: TDK CORPORATIONInventors: Hiroki Akiba, Sanshiro Aman, Keiko Takeuchi
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Publication number: 20200067133Abstract: An all-solid-state lithium ion secondary battery including: a layered body in which a plurality of electrode layers are laminated with a solid electrolyte layer therebetween, a current collector layer and an active material layer being laminated in each of the electrode layers; and a terminal electrode that is formed such that the terminal electrode is in contact with a side surface of the layered body from which end surfaces of the electrode layers are exposed, in which the terminal electrode contains Cu, and Cu-containing regions are formed at grain boundaries that are present near the terminal electrode among grain boundaries of particles that form the active material layers and the solid electrolyte layer.Type: ApplicationFiled: March 29, 2018Publication date: February 27, 2020Applicant: TDK CORPORATIONInventors: Hiroshi SATO, Keiko TAKEUCHI, Masayuki MUROI, Taisuke MASUKO, Hisaji OYAKE, Tomohiro YANO
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Publication number: 20200031670Abstract: A lithium ion-conducting solid electrolyte containing at least one metallic element selected from the group made of Zn, Ca, Mg, and Cu within a range of 0.01% by mass to 3.0% by mass, and a solid-state lithium ion rechargeable battery containing this lithium ion-conducting solid electrolyte.Type: ApplicationFiled: September 25, 2017Publication date: January 30, 2020Applicant: TDK CORPORATIONInventors: Hiroshi SATO, Masahiro OISHI, Taisuke MASUKO, Tomohiro YANO, Keiko TAKEUCHI
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Publication number: 20200028215Abstract: An all-solid-state lithium ion secondary battery includes a plurality of electrode layers that are laminated with a solid electrolyte layer therebetween, a current collector layer and an active material layer being laminated in each of the electrode layers, the current collector layers contain Cu, and Cu-containing regions are formed at grain boundaries that are present near the current collector layer among grain boundaries of particles that form the active material layer.Type: ApplicationFiled: March 29, 2018Publication date: January 23, 2020Applicant: TDK CORPORATIONInventors: Hiroshi SATO, Keiko TAKEUCHI, Masayuki MUROI, Taisuke MASUKO, Hisaji OYAKE, Tomohiro YANO
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Patent number: 10513464Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the composition, the composition containing a tungsten bronze type composite oxide represented by chemical formula (Sr1.00?(s+t)BasCat)6.00?xRx(Ti1.00?(a+d)ZraSid)x?2.00(Nb1.00?bTab)8.00?xO30.00, wherein R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, b, and d satisfy 0?s?1.00, 0?t?1.00, 0?s+t?1.00, 0?x?3.00, 0.01?a?0.98, 0?b?1.00, 0.02?d?0.15, and 0.03?a+d?1.00. At least one element selected from Mn, Mg, Co, V, W, Mo, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: GrantFiled: March 6, 2017Date of Patent: December 24, 2019Assignee: TDK CORPORATIONInventors: Hiroki Akiba, Sanshiro Aman, Keiko Takeuchi
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Publication number: 20190256425Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00-(s+t)BasCat)6.00-xRx(Ti1.00-aZra)x+2.00(Nb1.00-bTab)8.00-xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50?s?1.00, 0?t?0.30, 0.50?s+t?1.00, 1.50<x?3.00, 0.20?a?1.00, and 0?b?1.00. At least one selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al is contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: ApplicationFiled: March 6, 2017Publication date: August 22, 2019Applicant: TDK CORPORATIONInventors: Hiroki AKIBA, Sanshiro AMAN, Keiko TAKEUCHI
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Publication number: 20190115154Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. A dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00?s?tBasCat)6.00?xRx(Ti1.00?aZra)x+2.00(Nb1.00?bTab)8.00?xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.70?s?1.00, 0?t?0.30, 0.70?s+t?1.00, 0?x?0.50, 0.10?a?1.00, and 0?b?1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al arc contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: ApplicationFiled: March 6, 2017Publication date: April 18, 2019Applicant: TDK CORPORATIONInventors: Sanshiro AMAN, Hiroki AKIBA, Keiko TAKEUCHI
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Publication number: 20190112235Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the composition, the composition containing a tungsten bronze type composite oxide represented by chemical formula (Sr1.00-(s+t)BasCat)6.00-xRx(Ti1.00-(a+d)ZraSid)x?2.00(Nb1.00-bTab)8.00-xO30.00, wherein R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, b, and d satisfy 0?s?1.00, 0?t?1.00, 0?s+t?1.00, 0?x?3.00, 0.01?a?0.98, 0?b?1.00, 0.02?d?0.15, and 0.03?a+d?1.00. At least one element selected from Mn, Mg, Co, V, W, Mo, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: ApplicationFiled: March 6, 2017Publication date: April 18, 2019Applicant: TDK CORPORATIONInventors: Hiroki AKIBA, Sanshiro AMAN, Keiko TAKEUCHI
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Publication number: 20190103222Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00?s?tBasCat)6.00?xRx(Ti1.00?aZra)x+2.00(Nb1.00?bTab)8.00?xO30.00 in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50?s?1.00, 0?t?0.50, 0.50?s+t?1.00, 0.50<x?1.50, 0.30?a?1.00, and 0?b?1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.Type: ApplicationFiled: March 6, 2017Publication date: April 4, 2019Applicant: TDK CORPORATIONInventors: Sanshiro AMAN, Hiroki AKIBA, Keiko TAKEUCHI
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Publication number: 20160204999Abstract: A monitoring apparatus includes one or more processors configured to execute a plurality of monitoring processes generated for a plurality of monitoring target information processing apparatuses and communication processes generated by a count smaller than a number of the plurality of monitoring target information processing apparatuses, wherein each of the plurality of monitoring processes causes the one or more processors to register an instruction of collecting information from a monitoring target information processing apparatus in a queue, and each of the communication processes causes the one or more processors to read the instruction registered in the queue, to collect monitored information from the monitoring target information processing apparatus, and to write the monitored information into a storage unit.Type: ApplicationFiled: December 3, 2015Publication date: July 14, 2016Applicant: FUJITSU LIMITEDInventors: Mikayo KOSUGI, Keiko Takeuchi