Patents by Inventor Taro Fukaya
Taro Fukaya 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).
-
Publication number: 20240105917Abstract: According to one embodiment, provided is an active material including a niobium titanium-containing oxide phase and a carbon coating layer. The niobium titanium-containing oxide phase contains a niobium titanium-containing oxide having a monoclinic structure and Na, and a Na content therein is 0 ppm or more and 100 ppm or less. The carbon coating layer coats at least a part of the niobium titanium-containing oxide phase, and contains 0.001% or more of carboxyl group.Type: ApplicationFiled: February 27, 2023Publication date: March 28, 2024Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro HARADA, Taro FUKAYA, Yasunobu YAMASHITA, Kakuya UEDA, Yoshiaki MURATA, Norio TAKAMI
-
Publication number: 20240097224Abstract: In general, according to one embodiment, a recycling method is provided. The method includes dispersing an electrode containing a niobium titanium oxide in water; separating the niobium titanium oxide from the electrode dispersed in the water; and applying a first heat treatment to the separated niobium titanium oxide.Type: ApplicationFiled: February 23, 2023Publication date: March 21, 2024Inventors: Taro FUKAYA, Asato KONDO, Yasuhiro HARADA
-
Publication number: 20230197931Abstract: According to one embodiment, a secondary battery including a negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode mixture layer. A thickness of the negative electrode current collector is in a range of 8 ?m to 18 ?m. The negative electrode current collector includes a first current collector end surface extending along a stacking direction. The negative electrode mixture layer includes a niobium-titanium composite oxide, and a first protrusion protruding from the first current collector end surface along a first direction orthogonal to the stacking direction. A protrusion length A1 of the first protrusion satisfies 0 mm<A1?1.0 mm.Type: ApplicationFiled: August 26, 2022Publication date: June 22, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuta KANAI, Tetsuya SASAKAWA, Kazuomi YOSHIMA, Tomoko SUGIZAKI, Yasunobu YAMASHITA, Kazuki ISE, Taro FUKAYA, Norio TAKAMI, Yasuhiro HARADA, Keigo HOSHINA
-
Patent number: 11563242Abstract: According to a management method in an embodiment, in charging of a battery in each of a constant current mode and a constant power mode, it is determined that the battery is unusable based on a voltage of the battery dropping by a voltage threshold value or more from a starting time of dropping without increasing again to a voltage value at the starting time of dropping. In the management method, in charging of the battery in a constant voltage mode, it is determined that the battery is unusable based on a current supplied to the battery increasing by a current threshold value or more from a starting time of increasing without dropping again to a current value at the starting time of increasing.Type: GrantFiled: February 26, 2021Date of Patent: January 24, 2023Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Takashi Kishi, Taro Fukaya, Kazuomi Yoshima, Yasunobu Yamashita
-
Publication number: 20220352542Abstract: According to one embodiment, a method of producing a secondary battery includes preparing a battery architecture, which includes a positive electrode, a negative electrode, and an electrolyte, providing a potential adjusted state by adjusting a positive electrode potential to 4.3 V to 4.8 V and a negative electrode potential to 0.5 V to 1.1 V based on oxidation-reduction potential of lithium, and holding the battery architecture in the potential adjusted state. The positive electrode includes a nickel-containing oxide represented by a general formula LixM1O2. M1 is a metal element including at least Ni in an elemental ratio of 50% or more, and 0<x?1. The negative electrode includes a titanium-containing oxide. The electrolyte includes a sulfur-containing compound.Type: ApplicationFiled: February 9, 2022Publication date: November 3, 2022Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuiko KOITABASHI, Taro FUKAYA, Yasuhiro HARADA, Norio TAKAMI
-
Publication number: 20220077510Abstract: According to a management method in an embodiment, in charging of a battery in each of a constant current mode and a constant power mode, it is determined that the battery is unusable based on a voltage of the battery dropping by a voltage threshold value or more from a starting time of dropping without increasing again to a voltage value at the starting time of dropping. In the management method, in charging of the battery in a constant voltage mode, it is determined that the battery is unusable based on a current supplied to the battery increasing by a current threshold value or more from a starting time of increasing without dropping again to a current value at the starting time of increasing.Type: ApplicationFiled: February 26, 2021Publication date: March 10, 2022Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takashi KISHI, Taro FUKAYA, Kazuomi YOSHIMA, Yasunobu YAMASHITA
-
Patent number: 11251627Abstract: According to one embodiment, information related to a positive-electrode electric potential and a negative-electrode electric potential of each of one or more batteries is acquired, and whether deviation of the positive/negative-electrode electric potentials from a reference state is beyond a prescribed range is determined for each of one or more batteries. Further, in response to at least existence of a battery-to-be-restored that is a battery in which the determined deviation of positive/negative-electrode electric potentials from a reference state is beyond a prescribed range, a state of charge of the battery-to-be-restored is held in a restoration holding range for a prescribed time.Type: GrantFiled: February 6, 2020Date of Patent: February 15, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Taro Fukaya, Norio Takami, Yasuhiro Harada, Takashi Kishi, Keigo Hoshina, Kazuomi Yoshima, Yasunobu Yamashita
-
Publication number: 20210288306Abstract: According to one embodiment, a negative electrode is provided. The negative electrode includes a negative electrode active material-containing layer including a niobium titanium composite oxide and a sulfur-containing coating. Spectral data obtained by X-ray photoelectron spectroscopy on the surface of the negative electrode active material-containing layer includes a first peak with a peak top existing in the range of 208 eV to 210 eV and a second peak with a peak top existing in the range of 160 eV to 165 eV. The ratio (P2/P1) of the peak height P2 of the second peak to the peak height P1 of the first peak falls within the range of 0.05 to 2.Type: ApplicationFiled: August 31, 2020Publication date: September 16, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taro FUKAYA, Keigo HOSHINA, Yasuhiro HARADA, Norio TAKAMI
-
Patent number: 11063256Abstract: According to one embodiment, an active material is provided. The active material includes particles of a monoclinic niobium titanium composite oxide. The particles include primary particles. The primary particles have an average aspect ratio of 5 or more.Type: GrantFiled: September 5, 2018Date of Patent: July 13, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions CorporationInventors: Yasuhiro Harada, Norio Takami, Taro Fukaya, Takuya Iwasaki
-
Patent number: 10978752Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a negative electrode. The negative electrode includes an active material composite. The active material composite includes active material particles and a layer covering at least a portion of surfaces of the active material particles. The active material particles include titanium-containing oxide particles. The layer contains N and Si. The layer includes a first surface facing the at least the portion of surfaces of the active material particles and a second surface defining a layer thickness from the first surface. An N concentration in the layer decreases from the first surface to the second surface. A Si concentration in the layer increases from the first surface to the second surface.Type: GrantFiled: September 5, 2018Date of Patent: April 13, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions CorporationInventors: Taro Fukaya, Takashi Kishi, Kazuki Ise, Kazuomi Yoshima, Yasunobu Yamashita, Yasuhiro Harada, Norio Takami
-
Publication number: 20210075225Abstract: According to one embodiment, information related to a positive-electrode electric potential and a negative-electrode electric potential of each of one or more batteries is acquired, and whether deviation of the positive/negative-electrode electric potentials from a reference state is beyond a prescribed range is determined for each of one or more batteries. Further, in response to at least existence of a battery-to-be-restored that is a battery in which the determined deviation of positive/negative-electrode electric potentials from a reference state is beyond a prescribed range, a state of charge of the battery-to-be-restored is held in a restoration holding range for a prescribed time.Type: ApplicationFiled: February 6, 2020Publication date: March 11, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taro FUKAYA, Norio TAKAMI, Yasuhiro HARADA, Takashi KISHI, Keigo HOSHINA, Kazuomi YOSHIMA, Yasunobu YAMASHITA
-
Publication number: 20190296346Abstract: According to one embodiment, an active material is provided. The active material includes particles of a monoclinic niobium titanium composite oxide. The particles include primary particles. The primary particles have an average aspect ratio of 5 or more.Type: ApplicationFiled: September 5, 2018Publication date: September 26, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions CorporationInventors: Yasuhiro HARADA, Norio Takami, Taro Fukaya, Takuya Iwasaki
-
Publication number: 20190288348Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a negative electrode. The negative electrode includes an active material composite. The active material composite includes active material particles and a layer covering at least a portion of surfaces of the active material particles. The active material particles include titanium-containing oxide particles. The layer contains N and Si. The layer includes a first surface facing the at least the portion of surfaces of the active material particles and a second surface defining a layer thickness from the first surface. An N concentration in the layer decreases from the first surface to the second surface. A Si concentration in the layer increases from the first surface to the second surface.Type: ApplicationFiled: September 5, 2018Publication date: September 19, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions CorporationInventors: Taro FUKAYA, Takashi KISHI, Kazuki ISE, Kazuomi YOSHIMA, Yasunobu YAMASHITA, Yasuhiro HARADA, Norio TAKAMI
-
Patent number: 9701553Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate.Type: GrantFiled: June 5, 2014Date of Patent: July 11, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
-
Publication number: 20160060145Abstract: A chelating agent of the embodiment is an amide compound in which a hydrogen atom of an —NH— site or an —NH2— site in an amine compound is substituted with a functional group derived from diglycolic acid. The amine compound is selected from the group consisting of a compound represented by a following general formula (1) and a polyethyleneimine having a molecular weight of 200 to 100,000. In the general formula (1), x, y and z respectively represent a number of repetitions for —CH2—CH2—NH—, x represents an integer of 1 to 10, y represents an integer of 0 to 5, and z represents an integer of 0 to 5.Type: ApplicationFiled: April 1, 2015Publication date: March 3, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Akiko SUZUKI, Tomohito IDE, Taro FUKAYA, Toshihiro IMADA
-
Patent number: 9121083Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplier, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplier from the separation tank.Type: GrantFiled: September 5, 2014Date of Patent: September 1, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
-
Patent number: 8986541Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate.Type: GrantFiled: June 7, 2012Date of Patent: March 24, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
-
Publication number: 20140377152Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplier, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplier from the separation tank.Type: ApplicationFiled: September 5, 2014Publication date: December 25, 2014Inventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
-
Patent number: 8911631Abstract: According to one embodiment, a fluorine recovering apparatus includes a precipitating device allowing fluoride ion-containing water to react with calcium source to form precipitate, a mixing tank mixing a filter aid including particles of a magnetic material having a diameter of 0.5 to 5 ?m with a dispersion medium to produce slurry, a filter aid feeder to the mixing tank, a solid-liquid separator with a filter depositing a filter aid layer, and depositing the precipitate on the filter aid layer, a cleaning mechanism removing the filter aid and the precipitate, a separating tank separating the filter aid and the precipitate, and a returning mechanism returning the filter aid to the filter aid feeder.Type: GrantFiled: May 9, 2012Date of Patent: December 16, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Shuji Seki
-
Publication number: 20140284256Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate.Type: ApplicationFiled: June 5, 2014Publication date: September 25, 2014Inventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki