Patents by Inventor Tatsuya Toyama
Tatsuya Toyama 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: 20240296054Abstract: To deploy servers in a large-scale network more expeditiously and efficiently, disclosed herein is a server apparatus, comprising: a disk mounting unit configured to receive a command to mount a remote disk from a server management apparatus connected to the server apparatus via a network, and mount the remote disk on the server apparatus according to the received command; a boot execution unit configured to read a script written in the remote disk mounted by the disk mounting unit, and boot the server apparatus; and an information setting unit configured to set configuration information and identifier information of the server apparatus included in the script to the server apparatus.Type: ApplicationFiled: August 30, 2021Publication date: September 5, 2024Applicant: RAKUTEN MOBILE, INC.Inventors: Ryota MIBU, aIZHAN BIZHANOVA, Amit SINGH, Dharmendra KUSHWAHA, Rana TAKAKI, Takahiro WATANABE, Tatsuya TOYAMA
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Patent number: 11949100Abstract: The present invention is to provide a cathode active material used for a lithium ion secondary battery which has a large charge-discharge capacity, and excels in charge-discharge cycle properties, output properties and productivity, and, a lithium ion secondary battery using the same. The cathode active material used for a lithium ion secondary battery comprises a lithium transition metal composite oxide represented by the following Formula (1); Li1+aNibCocMndMeO2+?, where, in the formula (1), M is at least one metal element other than Li, Ni, Co, and Mn; and a, b, c, d, e, and ? satisfy the following conditions: ?0.04?a?0.04, 0.80?b<1.00, 0?c?0.04, 0<d<0.20, b+c+d+e=1, ?0.2<?<0.2, and c and d in the Formula (1) satisfy c/d?0.75.Type: GrantFiled: March 4, 2019Date of Patent: April 2, 2024Assignee: Proterial, Ltd.Inventors: Tatsuya Toyama, Shin Takahashi, Hisato Tokoro, Genei Nakajima, Shuichi Takano, Akira Gunji, Akihiko Noie
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Patent number: 11688847Abstract: A method for manufacturing a cathode active material for a lithium ion secondary battery comprises mixing lithium carbonate and a compound containing a metal element other than Li, and a firing step. The firing step includes at last two stages of controlling firing to different temperatures. The at least two stages include controlling a firing temperature to a lower temperature and controlling a firing temperature to a higher temperature. The firing is controlled is such that the former stage has a lower oxygen concentration in an atmosphere than the latter stage. The firing apparatus comprises at least two firing furnaces of controlling firing temperatures to different temperatures. The at least two firing furnaces include controlling a firing temperature to a lower temperature and controlling firing temperature to a higher temperature. The latter firing furnace has a gas outlet being in communication with the former firing furnace.Type: GrantFiled: November 21, 2018Date of Patent: June 27, 2023Assignee: PROTERIAL, LTD.Inventors: Akira Gunji, Tatsuya Toyama, Akio Takeuchi, Hisato Tokoro, Shuichi Takano, Genei Nakajima
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Patent number: 11677075Abstract: Provided is a cathode active material for a lithium ion secondary battery in which the secondary particles constituting the powder have a high breaking strength and a good coatability, and a method for manufacturing same. The cathode active material for a lithium ion secondary battery includes a primary particle of a lithium composite compound; and secondary particles formed by an aggregation of primary particles, wherein a ratio between an average particle size of the primary particles and an average particle size of the secondary particles is 0.006 or more and 0.25 or less, an amount of lithium carbonate is 0.4% by mass or less, and a breaking strength of the secondary particles is 30 MPa or more.Type: GrantFiled: December 26, 2018Date of Patent: June 13, 2023Assignee: PROTERIAL, LTD.Inventors: Shuichi Takano, Akira Gunji, Hisato Tokoro, Genei Nakajima, Tatsuya Toyama, Shin Takahashi
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Patent number: 11646412Abstract: The present invention is to provide a cathode active material used for a lithium ion secondary battery which has a large charge-discharge capacity, and excels in charge-discharge cycle properties, output properties and productivity, and, a lithium ion secondary battery using the same. The cathode active material used for a lithium ion secondary battery comprises a lithium-transition metal composite oxide having an ?-NaFeO2 type crystal structure and represented by the following formula (1); Li1+aNibCocMdO2+?, where, in the formula (1), M is at least one metal element other than Li, Ni and Co; and a, b, c, d and a are respectively numbers satisfying ?0.04?a?0.04, 0.80?b?1.0, 0?c?0.06, b+c+d=1, and ?0.2<?<0.2, and an a-axis lattice constant of the crystal structure is 2.878×10?10 m or more.Type: GrantFiled: August 28, 2018Date of Patent: May 9, 2023Assignee: HITACHI METALS, LTD.Inventors: Tatsuya Toyama, Shin Takahashi, Hisato Tokoro, Genei Nakajima, Shuichi Takano, Akira Gunji, Akihiko Noie
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Patent number: 11581534Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and a are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.Type: GrantFiled: August 14, 2020Date of Patent: February 14, 2023Assignee: HITACHI METALS, LTD.Inventors: Akira Gunji, Hisato Tokoro, Shin Takahashi, Tatsuya Toyama, Hiroshi Haruna, Daiko Takamatsu, Takashi Nakabayashi, Shuichi Takano
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Publication number: 20220348391Abstract: A packaging body configured with a packaging film, in which the outermost layer is a polyethylene-based resin layer and the polyethylene-based resin layer is uniaxially or biaxially stretched.Type: ApplicationFiled: September 16, 2020Publication date: November 3, 2022Applicant: MITSUI CHEMICALS TOHCELLO, INC.Inventors: Masayuki SAKURAI, Tsutomu KUBOTA, Hiroyuki WAKAKI, Tatsuya TOYAMA
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Publication number: 20220166019Abstract: A positive electrode active material for a lithium-ion secondary battery includes lithium transition metal composite oxide expressed by Composition Formula (1): Li1+aNibCocMdXeO2+? (1) [in which M represents at least one kind selected from Al and Mn, X represents one or more kinds of metal elements other than Li, Ni, Co, Al, and Mn, and a, b, c, d, e, and a are numerals satisfying ?0.04?a?0.04, 0.80?b?1.0, 0?c?0.15, 0?d?0.20, 0?e?0.05, b+c+d+e=1, and ?0.2???0.2]. A residual lithium hydroxide quantity (L1) in the positive electrode active material calculated by neutralization titration is 0.8 mass % or less, and a ratio of a residual lithium hydroxide quantity (L2) calculated by the neutralization titration after the positive electrode active material is compressed.Type: ApplicationFiled: February 11, 2022Publication date: May 26, 2022Inventors: Tatsuya TOYAMA, Hisato TOKORO, Shin TAKAHASHI, Akira GUNJI, Shuichi TAKANO
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Publication number: 20220115656Abstract: A positive electrode active material for lithium ion secondary battery is provided. The positive electrode active material for lithium ion secondary batteries contains a lithium transition metal complex oxide represented by composition formula (1): Li1+aNibCocMdXeO2+? (in composition formula (1), M represents at least one selected from Al and Mn, X represents at least one metallic element other than Li, Ni, Co, Al, and Mn, and a, b, c, d, e, and ? are numbers satisfying ?0.04?a?0.08, 0.80?b<1.0, 0?c<0.2, 0?d<0.2, 0<e<0.08, b+c+d+e=1, and ?0.2<?<0.2), wherein the positive electrode active material includes secondary particles formed through aggregation of multiple primary particles, and, in the primary particles inside the secondary particles, the atomic concentration D1 of X at a depth of 1 nm from the interface between the primary particles and the atom concentration D2 of X at the central portion of each of the primary particles satisfy D1>D2.Type: ApplicationFiled: March 10, 2020Publication date: April 14, 2022Applicant: HITACHI METALS, LTD.Inventors: Tatsuya TOYAMA, Akira GUNJI, Hisato TOKORO, Shin TAKAHASHI, Shuichi TAKANO
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Publication number: 20210336260Abstract: The present invention is to provide a cathode active material used for a lithium ion secondary battery which has a large charge-discharge capacity, and excels in charge-discharge cycle properties, output properties and productivity, and, a lithium ion secondary battery using the same. The cathode active material used for a lithium ion secondary battery comprises a lithium-transition metal composite oxide having an ?-NaFeO2 type crystal structure and represented by the following formula (1); Li1+aNibCocMdO2+?, where, in the formula (1), M is at least one metal element other than Li, Ni and Co; and a, b, c, d and a are respectively numbers satisfying ?0.04?a?0.04, 0.80?b?1.0, 0?c?0.06, b+c+d=1, and ?0.2<?<0.2, and an a-axis lattice constant of the crystal structure is 2.878×10?10 m or more.Type: ApplicationFiled: August 28, 2018Publication date: October 28, 2021Applicant: HITACHI METALS, LTD.Inventors: Tatsuya TOYAMA, Shin TAKAHASHI, Hisato TOKORO, Genei NAKAJIMA, Shuichi TAKANO, Akira GUNJI, Akihiko NOIE
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Patent number: 11011751Abstract: A compound having a layered structure that is used for a positive electrode active material for a lithium ion secondary battery achieves both a high energy density and a high cyclability. The positive electrode active material for a lithium ion secondary battery contains a compound having a layered structure belonging to a space group R-3m, in which the compound having a layered structure is represented by a compositional formula: Li1+aM1O2+? wherein M1 represents a metal element or metal elements other than Li, and contains at least Ni, ?0.03?a?0.10, and ?0.1<?<0.1, a proportion of Ni in M1 is larger than 70 atom %, and a site occupancy of a transition metal or transition metals at a 3a site obtained by structural analysis by a Rietveld method is less than 2%, and a content of residual lithium hydroxide in the positive electrode active material is 1 mass % or less.Type: GrantFiled: October 2, 2015Date of Patent: May 18, 2021Assignee: HITACHI METALS, LTD.Inventors: Akira Gunji, Tatsuya Toyama, Shin Takahashi, Takashi Nakabayashi, Shuichi Takano, Xiaoliang Feng, Sho Furutsuki, Hisato Tokoro
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Publication number: 20210126237Abstract: A method for manufacturing a cathode active material for a lithium ion secondary battery comprises mixing lithium carbonate and a compound containing a metal element other than Li, and a firing step. The firing step includes at last two stages of controlling firing to different temperatures. The at least two stages include controlling a firing temperature to a lower temperature and controlling a firing temperature to a higher temperature. The firing is controlled is such that the former stage has a lower oxygen concentration in an atmosphere than the latter stage. The firing apparatus comprises at least two firing furnaces of controlling firing temperatures to different temperatures. The at least two firing furnaces include controlling a firing temperature to a lower temperature and controlling firing temperature to a higher temperature. The latter firing furnace has a gas outlet being in communication with the former firing furnace.Type: ApplicationFiled: November 21, 2018Publication date: April 29, 2021Applicant: HITACHI METALS, LTD.Inventors: Akira GUNJI, Tatsuya TOYAMA, Akio TAKEUCHI, Hisato TOKORO, Shuichi TAKANO, Genei NAKAJIMA
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Publication number: 20210013505Abstract: The present invention is to provide a cathode active material used for a lithium ion secondary battery which has a large charge-discharge capacity, and excels in charge-discharge cycle properties, output properties and productivity, and, a lithium ion secondary battery using the same. The cathode active material used for a lithium ion secondary battery comprises a lithium transition metal composite oxide represented by the following Formula (1); Li1+aNibCocMndMeO2+?, where, in the formula (1), M is at least one metal element other than Li, Ni, Co, and Mn; and a, b, c, d, e, and ? satisfy the following conditions: ?0.04?a?0.04, 0.80?b<1.00, 0?c?0.04, 0<d<0.20, b+c+d+e=1, ?0.2<?<0.2, and c and d in the Formula (1) satisfy c/d?0.75.Type: ApplicationFiled: March 4, 2019Publication date: January 14, 2021Applicant: HITACHI METALS, LTD.Inventors: Tatsuya TOYAMA, Shin TAKAHASHI, Hisato TOKORO, Genei NAKAJIMA, Shuichi TAKANO, Akira GUNJI, Akihiko NOIE
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Publication number: 20200373572Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and a are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.Type: ApplicationFiled: August 14, 2020Publication date: November 26, 2020Applicant: HITACHI METALS, LTD.Inventors: Akira GUNJI, Hisato TOKORO, Shin TAKAHASHI, Tatsuya TOYAMA, Hiroshi HARUNA, Daiko TAKAMATSU, Takashi NAKABAYASHI, Shuichi TAKANO
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Patent number: 10749175Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and ? are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.Type: GrantFiled: February 20, 2019Date of Patent: August 18, 2020Assignee: HITACHI METALS, LTD.Inventors: Akira Gunji, Hisato Tokoro, Shin Takahashi, Tatsuya Toyama, Hiroshi Haruna, Daiko Takamatsu, Takashi Nakabayashi, Shuichi Takano
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Publication number: 20200251733Abstract: Provided is a cathode active material for a lithium ion secondary battery in which the secondary particles constituting the powder have a high breaking strength and a good coatability, and a method for manufacturing same. The cathode active material for a lithium ion secondary battery includes a primary particle of a lithium composite compound; and secondary particles formed by an aggregation of primary particles, wherein a ratio between an average particle size of the primary particles and an average particle size of the secondary particles is 0.006 or more and 0.25 or less, an amount of lithium carbonate is 0.4% by mass or less, and a breaking strength of the secondary particles is 30 MPa or more.Type: ApplicationFiled: December 26, 2018Publication date: August 6, 2020Applicant: HITACHI METALS, LTD.Inventors: Shuichi TAKANO, Akira GUNJI, Hisato TOKORO, Genei NAKAJIMA, Tatsuya TOYAMA, Shin TAKAHASHI
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Patent number: 10727484Abstract: Provided are a cathode active substance used for a lithium ion secondary battery capable of suppressing an increase in an internal resistance inside the battery caused following charge/discharge cycles, a cathode including the cathode active substance, and a lithium ion secondary battery provided with the cathode. The cathode active substance includes a lithium composite compound represented by Formula: Li1+?NixCoyM11-x-y-zM2zO2+?. When Pi is defined as porosity with respect to an opening diameter of 0.6 ?m or less and measured by subjecting the active substance to a mercury press-in method, and Pp is defined as porosity with respect to the same diameter and measured by filling the active substance in a mold with an inner diameter of 10 mm, pressing the filled substance by a load of 40 MPa, and subjecting the pressed substance to the same method, a value of Pp/Pi is 1.5 or less.Type: GrantFiled: April 27, 2017Date of Patent: July 28, 2020Assignee: HITACHI METALS, LTD.Inventors: Hisato Tokoro, Takashi Nakabayashi, Shuichi Takano, Shin Takahashi, Akira Gunji, Tatsuya Toyama
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Publication number: 20190337359Abstract: In a refrigeration cycle device, a variable throttle mechanism is provided in a refrigerant passage that connects an evaporator and a compressor, and is configured to be capable of changing a passage cross-sectional area of the refrigerant passage. A radiator includes a plurality of tubes and a header tank. The plurality of tubes, through which the refrigerant discharged from the compressor flows, are stacked in a stacking direction. The header tank is provided at an end side in a longitudinal direction of each of the plurality of tubes and communicates with the plurality of tubes. A tank interior space of the header tank is partitioned into a plurality of sections that are arranged in the stacking direction. The header tank includes an opening/closing mechanism configured to open or close a communication portion that causes adjacent ones of the plurality of sections to communicate with each other.Type: ApplicationFiled: July 12, 2019Publication date: November 7, 2019Inventor: Tatsuya TOYAMA
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Patent number: 10461328Abstract: Provided are a cathode active material used for a lithium ion secondary battery capable of sufficiently realizing both high charge/discharge capacities and excellent cycle properties, and a lithium ion secondary battery using the cathode active material. The cathode active material contains a plurality of secondary particles formed via agglomeration of a plurality of primary particles of a lithium transition metal composite oxide. Spreading resistance distributions of the secondary particles respectively observed in cross-sections at optional three positions of the cathode active material are measured so as to afford average values of spreading resistance of the secondary particles in the respective cross-sections. The average values of spreading resistance of the secondary particles are further averaged. The resultant averaged value of spreading resistance is made to enter the range of 1.0×106 ?/cm or more and 1.0×1010 ?/cm or less.Type: GrantFiled: May 23, 2017Date of Patent: October 29, 2019Assignee: HITACHI METALS, LTD.Inventors: Tatsuya Toyama, Hisato Tokoro, Shin Takahashi, Akira Gunji, Shuichi Takano, Takashi Nakabayashi
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Patent number: 10388944Abstract: A positive electrode active material includes a primary particle represented by Compositional Formula (1): Li1+xNiyCozM1?x?y?zO2 ??(1), where x is a number satisfying a relation represented by an expression ?0.12?x?0.2; y is a number satisfying a relation represented by an expression 0.7?y?0.9; z is a number satisfying a relation represented by an expression 0.05?z?0.3; and M is at least one element selected from the group consisting of Mg, Al, Ti, Mn, Zr, Mo, and Nb; or a secondary particle into which the primary particle aggregates. The primary particle or the secondary particle includes a free lithium compound in a weight proportion of 0.1% or more and 2.0% or less, and the weight of lithium hydroxide in the free lithium compound is 60% or less of the weight of lithium carbonate in the free lithium compound.Type: GrantFiled: September 29, 2015Date of Patent: August 20, 2019Assignee: HITACHI METALS, LTD.Inventors: Tatsuya Toyama, Shin Takahashi, Akira Gunji, Xiaoliang Feng, Hisato Tokoro, Takashi Nakabayashi, Shuichi Takano, Sho Furutsuki