Patents by Inventor Yorikazu Yoshida
Yorikazu Yoshida 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: 11978897Abstract: According to one embodiment, an active material is provided. The active material includes an Nb2TiO7 phase and at least one Nb-rich phase selected from the group consisting of an Nb10Ti2O29 phase, an Nb14TiO37 phase, and an Nb24TiO64 phase. The active material includes potassium and phosphorus, and a total concentration of potassium and phosphorus in the active material is in the range of 0.01% by mass to 5.00% by mass. An average crystallite diameter is in the range of 80 nm to 150 nm. In a particle size distribution chart obtained by a laser diffraction scattering method, D10 is 0.3 ?m or greater, and D90 is 10 ?m or less. The active material satisfies a peak intensity ratio represented by the following Formula (1). 0<IB/IA?0.Type: GrantFiled: August 23, 2021Date of Patent: May 7, 2024Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Yorikazu Yoshida, Kakuya Ueda, Norio Takami
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Publication number: 20230327097Abstract: In general, according to one embodiment, an electrode including a mixture layer containing a titanium-containing oxide and a conductive agent is provided. The electrode satisfies expression (1). Where, L* is a lightness of the electrode according to JISZ8722:2009. Also, ri is a particle size for the mixture layer at a volume cumulative frequency dx, where i is a natural number from 1 to 9. The volume cumulative frequency dx is a volume-based cumulative frequency for which accumulation starts with a smaller particle size. The volume cumulative frequency dx takes a value from 10% to 90% in increments of 10%. 7.0 ? 100 ? L ? / ? 1 9 1 r i d i ? 11.Type: ApplicationFiled: August 31, 2022Publication date: October 12, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yasunobu YAMASHITA, Yorikazu YOSHIDA, Yasuhiro HARADA, Norio TAKAMI, Shinsuke MATSUNO
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Publication number: 20230299278Abstract: In general, according to one embodiment, an active material including particles containing a niobium-containing oxide is provided. The particles containing the niobium-containing oxide contain single particles having protruded parts and recessed parts. Three or more of the recessed parts satisfy 0.1?a/L?0.5 (1). Where L is a length of a tangent line in contact with a first protruded part and a second protruded part, and a is a maximum length of a perpendicular line from the tangent line to a recessed part defined by the first protruded part and the second protruded part.Type: ApplicationFiled: August 31, 2022Publication date: September 21, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro HARADA, Yasunobu YAMASHITA, Yorikazu YOSHIDA, Kakuya UEDA, Norio TAKAMI
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Publication number: 20220293926Abstract: According to one embodiment, an active material is provided. The active material includes an Nb2TiO7 phase and at least one Nb-rich phase selected from the group consisting of an Nb10Ti2O29 phase, an Nb14TiO37 phase, and an Nb24TiO64 phase. The active material includes potassium and phosphorus, and a total concentration of potassium and phosphorus in the active material is in the range of 0.01% by mass to 5.00% by mass. An average crystallite diameter is in the range of 80 nm to 150 nm. In a particle size distribution chart obtained by a laser diffraction scattering method, D10 is 0.3 ?m or greater, and D90 is 10 ?m or less. The active material satisfies a peak intensity ratio represented by the following Formula (1). 0<IB/IA0.Type: ApplicationFiled: August 23, 2021Publication date: September 15, 2022Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro HARADA, Yorikazu YOSHIDA, Kakuya UEDA, Norio TAKAMI
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Patent number: 10854931Abstract: According to one embodiment, an active material is provided. This active material includes active material particles containing orthorhombic Na-containing niobium titanium composite oxide, and satisfies the following formula (1): 1?A5/A0??(1) where A5 is a mole content ratio of a Li mole content L5 to a total of a Ti mole content T5 and a Nb mole content N5, and A0 is a mole content ratio of a Li mole content L0 to a total of a Ti mole content T0 and a Nb mole content N0.Type: GrantFiled: December 28, 2016Date of Patent: December 1, 2020Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Keigo Hoshina, Fumihiro Tejima, Yorikazu Yoshida, Yasuhiro Harada, Norio Takami
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Patent number: 10516163Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li2+wNa2?xM1yTi6?zM2zO14+?. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0?w?4, x is within a range of 0<x<2, y is within a range of 0?y<2, z is within a range of 0<z?6, and ? is within a range of ?0.5???0.5.Type: GrantFiled: December 26, 2017Date of Patent: December 24, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Yorikazu Yoshida, Kazuki Ise
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Patent number: 10511014Abstract: According to one embodiment, there is provided a battery module. The battery module includes five nonaqueous electrolyte batteries electrically connected in series. The five nonaqueous electrolyte batteries each include a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode includes an active material including a titanium-including composite oxide. The titanium-including composite oxide includes Na and a metal element M within a crystal structure. The metal element M is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al.Type: GrantFiled: September 14, 2016Date of Patent: December 17, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Yasuhiro Harada, Norio Takami, Yorikazu Yoshida, Kazuki Ise
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Patent number: 10490813Abstract: According to one embodiment, a battery active material is provided. The battery active material includes monoclinic complex oxide represented by the formula LixTi1?yM1yNb2?zM2zO7+? (0?x?5, 0?y?1, 0?z?2, ?0.3???0.3). In the above formula, M1 is at least one element selected from the group consisting of Zr, Si and Sn, and M2 is at least one element selected from the group consisting of V, Ta and Bi.Type: GrantFiled: November 2, 2016Date of Patent: November 26, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Hiroki Inagaki, Yorikazu Yoshida
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Patent number: 10355274Abstract: According to one embodiment, an electrode is provided. The electrode includes active material particles containing a niobium-titanium composite oxide. The active material particles include a first active material particle, and a second active material particle located with a space between the first active material particle and the second active material particle.Type: GrantFiled: March 10, 2017Date of Patent: July 16, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yorikazu Yoshida, Wen Zhang, Yasuhiro Harada, Norio Takami
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Patent number: 10312511Abstract: A vehicle containing an nonaqueous electrolyte battery, the nonaqueous electrolyte battery including: a negative electrode containing a negative electrode active material; a positive electrode; and a nonaqueous electrolyte, where the negative electrode active material contains a composite oxide of formula: Lix(Nb1-yTay)2-zTi1+0.5zM0.5zO7, where 0?x?5, 0?y?1, and 0.4?z?1, and M is at least one metal element selected from Mo and W.Type: GrantFiled: January 26, 2017Date of Patent: June 4, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Yorikazu Yoshida, Kazuki Ise, Kazuomi Yoshima
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Patent number: 10236501Abstract: According to one embodiment, there is provided an active material including monoclinic niobium titanium composite oxide particles and a carbon material layer. The monoclinic niobium titanium composite oxide particles can absorb and release Li ions or Na ions and satisfy Formula (1) below. The carbon material layer covers at least a part of surfaces of the niobium titanium composite oxide particles and satisfies Formula (2) below: 0.5?(?/?)?2??(1) 0?(?/?)?0.Type: GrantFiled: July 8, 2014Date of Patent: March 19, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Norio Takami, Yasuhiro Harada, Kazuki Ise, Yorikazu Yoshida
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Patent number: 10193149Abstract: According to one embodiment, a battery active material includes a complex oxide containing Nb and Ti and an element M. In the active material, the molar ratio (M/Ti) of the element M to Ti satisfies the following formula (I): 0<M/Ti?0.5 (I). In the complex oxide containing Nb and Ti, the molar ratio (Nb/Ti) of Nb to Ti satisfies the following formula (II): 0?Nb/Ti?5 (II). The element M is at least one selected from the group consisting of B, Na, Mg, Al, Si, S, P, K, Ca, Mo, W, Cr, Mn, Co, Ni, and Fe.Type: GrantFiled: August 19, 2015Date of Patent: January 29, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Hiroki Inagaki, Yorikazu Yoshida
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Patent number: 10096827Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li2+wNa2?xM1yTi6?zM2zO14+?. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0?w?4, x is within a range of 0<x<2, y is within a range of 0?y<2, z is within a range of 0<z?6, and ? is within a range of ?0.5???0.5.Type: GrantFiled: March 10, 2016Date of Patent: October 9, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Yorikazu Yoshida, Kazuki Ise
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Patent number: 10096826Abstract: According to one embodiment, an active material containing a niobium titanium composite oxide is provided. The niobium titanium composite oxide has average composition represented by LiyNb2+xTi1?xO7+0.5x (0?x?0.5, 0?y?5.5). The niobium titanium composite oxide satisfies peak intensity ratios represented by the following formulae (1) to (3): 0.05?(B/A)?0.7??(1) 0.01?(C/A)?0.2??(2) 0?(D/A)?0.1??(3).Type: GrantFiled: October 23, 2013Date of Patent: October 9, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kazuki Ise, Yorikazu Yoshida, Yasuhiro Harada, Hiroki Inagaki, Norio Takami
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Patent number: 10056615Abstract: According to one embodiment, there is provided an active substance. The active substance includes particles of niobium titanium composite oxide and a phase including a carbon material. The niobium titanium composite oxide is represented by Ti1?xM1xNb2?yM2yO7. The phase is formed on at least a part of the surface of the particles. The carbon material shows, in a Raman chart obtained by Raman spectrometry, a G band observed at from 1530 to 1630 cm?1 and a D band observed at from 1280 to 1380 cm?1. A ratio IG/ID between a peak intensity IG of the G band and a peak intensity ID of the D band is from 0.8 to 1.2.Type: GrantFiled: September 18, 2014Date of Patent: August 21, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kazuki Ise, Yorikazu Yoshida, Yasuhiro Harada, Hiroki Inagaki, Norio Takami
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Patent number: 10020504Abstract: According to one embodiment, an active material including a composite oxide is provided. The composite oxide is represented by a general formula LixM14?yTi10?zM22+zO27+?. Here, M1 includes at least one selected from the group consisting of Na, K, and Cs. M2 includes at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, Ni, and Al. x satisfies 0?x<18. y satisfies 0<y<4. z satisfies 0<z<4. ? satisfies ?0.3???0.3.Type: GrantFiled: September 12, 2016Date of Patent: July 10, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Yorikazu Yoshida
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Patent number: 10020503Abstract: An active material for a battery contains a niobium composite oxide represented by the formula: LixM(1-y)NbyNb2O(7+?), where M represents at least one kind selected from Ti and Zr. X, y, and ? are numbers respectively satisfying the following: 0?x?6, 0?y?1, and ?1???1.Type: GrantFiled: December 2, 2015Date of Patent: July 10, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hiroki Inagaki, Yasuhiro Harada, Yorikazu Yoshida, Kazuki Ise, Norio Takami
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Publication number: 20180123127Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li2+wNa2?xM1yTi6?zM2zO14+?. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0?w?4, x is within a range of 0<x<2, y is within a range of 0?y<2, z is within a range of 0<z?6, and ? is within a range of ?0.5???0.5.Type: ApplicationFiled: December 26, 2017Publication date: May 3, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Yorikazu Yoshida, Kazuki Ise
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Patent number: 9774032Abstract: According to one embodiment, there is provided an active substance. The active substance includes secondary particles and a carbon material phase formed on at least a part of a surface of each of the secondary particles. Each of the secondary particles is constructed by aggregated primary particles of an active material. The primary particles of the active material includes a niobium composite oxide represented by LixM(1?y)NbyNb2O(7+?), wherein M is at least one selected from the group consisting of Ti and Zr, and x, y, and ? respectively satisfy 0?x?6, 0?y?1, and ?1???1. The secondary particles have a compression fracture strength of 10 MPa or more.Type: GrantFiled: September 22, 2014Date of Patent: September 26, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hiroki Inagaki, Yasuhiro Harada, Yorikazu Yoshida, Kazuki Ise, Norio Takami
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Publication number: 20170271667Abstract: According to one embodiment, an electrode is provided. The electrode includes active material particles containing a niobium-titanium composite oxide. The active material particles include a first active material particle, and a second active material particle located with a space between the first active material particle and the second active material particle.Type: ApplicationFiled: March 10, 2017Publication date: September 21, 2017Applicant: Kabushiki Kaisha ToshibaInventors: Yorikazu YOSHIDA, Wen ZHANG, Yasuhiro HARADA, Norio TAKAMI