Patents by Inventor Takashi Kuboki
Takashi Kuboki 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: 20250123251Abstract: A method of analyzing isopropylphenyl phosphate according to an embodiment includes desorbing a sample by hot extraction, analyzing the desorbed sample to obtain a mass chromatogram of one or more compounds in the sample by gas chromatography mass spectrometry and determining whether the mass chromatogram includes one or more peaks of one or more product ions and/or one or more molecular ions each having a predetermined mass-to-charge ratio (m/z).Type: ApplicationFiled: July 31, 2024Publication date: April 17, 2025Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Asato KONDO, Mitsuhiro OKI, Takashi KUBOKI
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Patent number: 12266797Abstract: A secondary battery that includes: a positive electrode containing a positive electrode active material; a negative electrode; a separator arranged between the positive electrode and the negative electrode; and a first aqueous electrolyte held in at least the positive electrode. pH of the first aqueous electrolyte is more than 7. The positive electrode active material contains a lithium-containing compound that exhibits an average operating potential of less than 4.0 V based on lithium metal.Type: GrantFiled: February 10, 2022Date of Patent: April 1, 2025Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hayato Seki, Takashi Kuboki, Shinsuke Matsuno
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Publication number: 20250030052Abstract: According to one embodiment, a secondary battery including a negative electrode, a positive electrode, and an electrolyte is provided. The electrolyte contains water, a lithium salt, and a phosphate ester. The electrolyte contains the water in an amount of 150 ppm or more and 30,000 ppm or less in terms of mass. The lithium salt includes at least one selected from a group consisting of lithium bis (trifluoromethanesulfonyl) imide, lithium bis (fluorosulfonyl) imide, lithium difluorooxalate borate, lithium bisoxalate borate, and lithium triflate.Type: ApplicationFiled: February 28, 2024Publication date: January 23, 2025Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Keigo Hoshina, Takuya Hatakeyama, Yoshiaki Murata, Yasuyuki Hotta, Takashi Kuboki
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Publication number: 20250010527Abstract: A molded article with improved mechanical strength properties and thermal properties, and a method for producing the molded article. A composite molded article (C) comprising a cellulosic nanomaterial (A) and a thermoplastic resin (B), an area under a stress-strain curve of the composite molded article (C) (AUC1) being at least two times an area under a stress-strain curve of a melt-molded article (D) having the same composition as that of the composite molded article (C) (AUC2), wherein the stress-strain curve is a curve drawn with strain (unit: %) on the horizontal axis and stress (unit: MPa) on the vertical axis and obtained by subjecting the composite molded article (C) or the melt-molded article (D) to a tensile test, and the area is an area up to the horizontal axis from under a curved portion of the curve that is from the origin (stress: 0) of the stress-strain curve to a fracture of the composite molded article (C) or the melt-molded article (D).Type: ApplicationFiled: January 17, 2022Publication date: January 9, 2025Applicant: Kyoto UniversityInventors: Hiroyuki YANO, Takashi KUBOKI, Hironari SANO, Arimitsu USUKI, Hiroshi ITO, Shotaro NISHITSUJI, Takashi INOUE, Yukino ITO
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Patent number: 12140381Abstract: A method may produce a two-stage heat regenerating cryogenic refrigerator including a vacuum vessel, first and second cylinder disposed in the vessel, the second cylinder coaxially connected to the first cylinder, and first and second regenerator respectively disposed in the first and second cylinder. The method may include: accommodating a first heat regenerating material (HRM) in the first regenerator; and filling a plurality of HRM particles in the second regenerator. The HRM particles may be a second HRM, each of the HRM particles including an oxide or oxysulfide heat regenerating substance having a maximum value of specific heat at a temperature of ?20 K of 0.3+ J/cm3·K and Ca, Mn, Mg, Be, Sr, Al, Fe, Cu, Ni, and/or Co. Each of the HRM particles may include a first and second region, the second region being closer to an HRM particle outer edge than the first region.Type: GrantFiled: August 22, 2023Date of Patent: November 12, 2024Assignees: Kabushiki Kaisha Toshiba, TOSHIBA MATERIALS CO., LTD.Inventors: Tomohiro Yamashita, Takahiro Kawamoto, Tomoko Eguchi, Takashi Kuboki
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Patent number: 12140380Abstract: A method may produce a heat regenerating material particle, including: preparing a slurry by adding a powder of the heat regenerating substance to an alginic acid aqueous solution and mixing the powder of the heat regenerating substance and the aqueous alginic acid solution; and forming a particle by gelling the slurry by dropping the slurry into a gelling solution. The gelling solution may include a metal element including calcium (Ca), manganese (Mn), magnesium (Mg) beryllium (Be), strontium (Sr), aluminum (Al), iron (Fe), copper (Cu), nickel (Ni), and cobalt (Co). The forming may involve controlling the gelation time so that a concentration of the metal element in a first region of the particle becomes lower than a concentration of the metal element in a second region. The second region may be closer to an outer edge of the particle compared to the first region.Type: GrantFiled: August 22, 2023Date of Patent: November 12, 2024Assignees: Kabushiki Kaisha Toshiba, TOSHIBA MATERIALS CO., LTD.Inventors: Tomohiro Yamashita, Takahiro Kawamoto, Tomoko Eguchi, Takashi Kuboki
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Publication number: 20240082721Abstract: An example of an information processing system moves a player character in accordance with an operation of a player, automatically moves a first non-player character, and when the player character is on a movable object and the movable object is moving, places the first non-player character on the movable object and causes the first non-player character to transition to an implementable state. If the first non-player character is in the implementable state, The example of the information processing system causes the first non-player character to perform a first action in accordance with an operation input provided by the player.Type: ApplicationFiled: August 31, 2023Publication date: March 14, 2024Inventors: Yuya SATO, Takashi KUBOKI
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Publication number: 20240082731Abstract: An example of an information processing system moves a player character in accordance with an operation of a player, automatically moves a first non-player character, and if the player character comes close to the first non-player character, in accordance with an operation input provided by the player, causes the player character to transition to an implementable state where the player character can implement a first effect associated with the first non-player character. If the player character is in the implementable state, in accordance with an operation input provided by the player, the example of the information processing system causes the player character to perform a predetermined action and also implement the first effect.Type: ApplicationFiled: August 31, 2023Publication date: March 14, 2024Inventors: Yuya SATO, Takashi KUBOKI
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Publication number: 20230408206Abstract: A method may produce a heat regenerating material particle, including: preparing a slurry by adding a powder of the heat regenerating substance to an alginic acid aqueous solution and mixing the powder of the heat regenerating substance and the aqueous alginic acid solution; and forming a particle by gelling the slurry by dropping the slurry into a gelling solution. The gelling solution may include a metal element including calcium (Ca), manganese (Mn), magnesium (Mg) beryllium (Be), strontium (Sr), aluminum (Al), iron (Fe), copper (Cu), nickel (Ni), and cobalt (Co). The forming may involve controlling the gelation time so that a concentration of the metal element in a first region of the particle becomes lower than a concentration of the metal element in a second region. The second region may be closer to an outer edge of the particle compared to the first region.Type: ApplicationFiled: August 22, 2023Publication date: December 21, 2023Applicants: Kabushiki Kaisha Toshiba, TOSHIBA MATERIALS CO., LTD.Inventors: Tomohiro YAMASHITA, Takahiro KAWAMOTO, Tomoko EGUCHI, Takashi KUBOKI
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Publication number: 20230408207Abstract: A method may produce a two-stage heat regenerating cryogenic refrigerator including a vacuum vessel, first and second cylinder disposed in the vessel, the second cylinder coaxially connected to the first cylinder, and first and second regenerator respectively disposed in the first and second cylinder. The method may include: accommodating a first heat regenerating material (HRM) in the first regenerator; and filling a plurality of HRM particles in the second regenerator. The HRM particles may be a second HRM, each of the HRM particles including an oxide or oxysulfide heat regenerating substance having a maximum value of specific heat at a temperature of ?20 K of 0.3+ J/cm3·K and Ca, Mn, Mg, Be, Sr, Al, Fe, Cu, Ni, and/or Co. Each of the HRM particles may include a first and second region, the second region being closer to an HRM particle outer edge than the first region.Type: ApplicationFiled: August 22, 2023Publication date: December 21, 2023Applicants: Kabushiki Kaisha Toshiba, TOSHIBA MATERIALS CO., LTD.Inventors: Tomohiro YAMASHITA, Takahiro Kawamoto, Tomoko Eguchi, Takashi Kuboki
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Patent number: 11791080Abstract: A superconducting coil of embodiments includes a substrate having a curved surface, a superconducting wire wound on the curved surface, the superconducting wire having a first region and a second region facing the first region, a first resin layer surrounding the superconducting wire and including a plurality of first particles and first resin surrounding the first particles, and a second resin layer positioned between the first region and the second region, the second resin layer covering the first resin layer and including a plurality of second particles and second resin surrounding the second particles and being made of material different from material of the first resin.Type: GrantFiled: August 31, 2020Date of Patent: October 17, 2023Assignee: Kabushiki Kaisha ToshibaInventors: Mariko Hayashi, Takashi Kuboki
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Patent number: 11774184Abstract: A two-stage heat regenerating cryogenic refrigerator may include: a vacuum vessel; a first and second cylinder in the vessel; the second cylinder coaxially connected to the first cylinder; a 1st regenerator in the first cylinder and accommodating heat regenerating material (HRM) 1; and a second regenerator in the 2nd cylinder accommodating HRM 2, HRM 2 including HRM particles, each HRM particle including a metal element and a heat regenerating substance including an oxide or oxysulfide and having a maximum specific heat at ?20 K of ?0.3 J/cm3·K; each HRM particle including a 1st and 2nd region, the 2nd region being closer to each HRM particle's outer edge than the 1st, and the 2nd region having a higher metal element concentration than the 1st, the 1st and 2nd region containing the heat regenerating substance.Type: GrantFiled: April 25, 2022Date of Patent: October 3, 2023Assignees: Kabushiki Kaisha Toshiba, TOSHIBA MATERIALS CO., LTD.Inventors: Tomohiro Yamashita, Takahiro Kawamoto, Tomoko Eguchi, Takashi Kuboki
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Publication number: 20230279281Abstract: A cold storage material particle of an embodiment includes at least one first element selected from the group consisting of a rare earth element, silver (Ag), and copper (Cu) and a second element that is different from the first element and forms a multivalent metal ion in an aqueous solution, in which an atomic concentration of the second element is 0.001 atomic % or more and 60 atomic % or less, and a maximum value of volume specific heat at a temperature of 20K or less is 0.3 J/cm3·K or more.Type: ApplicationFiled: February 17, 2023Publication date: September 7, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.Inventors: Tomohiro YAMASHITA, Tomoko EGUCHI, Takashi KUBOKI, Daichi USUI, Takahiro KAWAMOTO
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Patent number: 11705609Abstract: A contact structure causing a first electric device to be electrically connected to a second electric device includes first terminals and second terminals. The second terminals include contact projections to be electrically connected to the first terminals, and cleaning projections located closer to an opening side of a fitting part of the second electric device than the contact projections to be brought into contact with the first terminals. The contact structure is configured such that the contact projections are not in contact with a surface of an outer case of the first electric device or surfaces of the first terminals before the cleaning projections climb over the first terminals. The contact structure is also configured such that the contact projections are brought into contact with the surfaces of the first terminals after the cleaning projections climb over the first terminals.Type: GrantFiled: January 18, 2021Date of Patent: July 18, 2023Assignee: JVCKENWOOD CORPORATIONInventors: Koji Chiba, Takashi Kuboki, Takeshi Kimura, Kenji Tanisho
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Patent number: 11637281Abstract: According to one embodiment, a secondary battery (100) including a positive electrode (5), a negative electrode (3), a first electrolyte (9), and a second electrolyte (8). The negative electrode (3) includes a lithium titanium oxide having a degree of proton substitution of 0.01 to 0.2. The first electrolyte (9) includes water and in contact with the positive electrode (5). The second electrolyte (8) includes water and in contact with the negative electrode (3).Type: GrantFiled: February 22, 2021Date of Patent: April 25, 2023Assignee: Kabushiki Kaisha ToshibaInventors: Hayato Seki, Wataru Uno, Takashi Kuboki
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Publication number: 20230116728Abstract: According to one embodiment, a secondary battery including an electrode and an aqueous electrolyte is provided. The electrode includes a resin current collector. The resin current collector includes a resin matrix and an electro-conductive filler. The aqueous electrolyte includes water.Type: ApplicationFiled: February 15, 2022Publication date: April 13, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yasuyuki Hotta, Kazuomi Yoshima, Keigo Hoshina, Takashi Kuboki, Shinsuke Matsuno
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Publication number: 20230024211Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes: a positive electrode containing a positive electrode active material; a negative electrode; a separator arranged between the positive electrode and the negative electrode; and a first aqueous electrolyte held in at least the positive electrode. pH of the first aqueous electrolyte is more than 7. The positive electrode active material contains a lithium-containing compound that exhibits an average operating potential of less than 4.0 V based on lithium metal.Type: ApplicationFiled: February 10, 2022Publication date: January 26, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Hayato SEKI, Takashi KUBOKI, Shinsuke MATSUNO
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Publication number: 20220294077Abstract: An electrode group includes a negative electrode, a positive electrode and a separator. The negative electrode includes a negative electrode active material-containing layer and a mesh negative electrode current collector. The positive electrode includes a positive electrode active material-containing layer. The separator includes a composite membrane containing inorganic solid particles and a polymer material. At least one of a first polymer material constituting the negative electrode active material-containing layer is the same as a second polymer material. A ratio a/b of denseness a and denseness b is greater than 1.05. A peeling strength ?1 is greater than a peeling strength ?2. An air permeability coefficient of a joined body of the composite membrane and the negative electrode is 1×10?19 m2 or more and 1×10?15 m2 or less.Type: ApplicationFiled: September 3, 2021Publication date: September 15, 2022Applicant: Kabushiki Kaisha ToshibaInventors: Yasuyuki HOTTA, Takashi KUBOKI, Shinsuke MATSUNO, Norio TAKAMI
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Patent number: 11424060Abstract: A superconducting coil of an embodiment includes a winding frame; a superconducting wire wound around the winding frame, the superconducting wire including a first region and a second region facing the first region; and a first layer placed between the first region and the second region, the first layer including a first particle and a thermosetting resin, the first particle including crystal having volume resistivity equal to or higher than 10?2 ?·m and having cleavage, and the thermosetting resin surrounding the first particle.Type: GrantFiled: August 30, 2019Date of Patent: August 23, 2022Assignee: Kabushiki Kaisha ToshibaInventors: Mariko Hayashi, Takashi Kuboki
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Patent number: RE49306Abstract: According to one embodiment, there is provided a non-aqueous electrolyte secondary battery including a positive electrode including a positive electrode active material layer, a negative electrode including a negative electrode active material layer, and a non-aqueous electrolyte. At least one of the positive electrode active material layer and the negative electrode active material layer contains carbon dioxide and releases the carbon dioxide in the range of 0.1 ml to 10 ml per 1 g when heated at 350° C. for 1 minute.Type: GrantFiled: November 27, 2018Date of Patent: November 22, 2022Assignee: Kabushiki Kaisha ToshibaInventors: Shinsuke Matsuno, Hiromichi Kuriyama, Hideki Satake, Takashi Kuboki