Patents by Inventor Taichi Sakamoto
Taichi Sakamoto 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: 20210288323Abstract: An object is to provide a non-aqueous electrolyte secondary battery negative electrode material which can improve a battery life as compared with a conventional one, a non-aqueous electrolyte secondary battery negative electrode including such a negative electrode material and a non-aqueous electrolyte secondary battery including such a negative electrode. A non-aqueous electrolyte secondary battery negative electrode material that includes a negative electrode active material formed of a silicon-based material a skeleton-forming agent including a silicate having a siloxane bond and an interface layer formed in an interface between the negative electrode active material and the skeleton-forming agent and formed of an inorganic material, a non-aqueous electrolyte secondary battery negative electrode including it and a non-aqueous electrolyte secondary battery are provided.Type: ApplicationFiled: March 9, 2021Publication date: September 16, 2021Inventors: Makiko TAKAHASHI, Tomohiro KINOSHITA, Kiyoshi TANAAMI, Shintaro AOYAGI, Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Naoto YAMASHI TA
-
Patent number: 10798807Abstract: There is provided a static electricity removal structure in a low-humidity space, in which static electricity can be removed with high efficiency in the low-humidity space by using a static electricity removal device. A low-humidity space is configured such that dehumidified air is supplied from one side of the low-humidity space into the low-humidity space through a blowout surface material in which ventilation pore is formed, and exhausting is performed from the other side of the low-humidity space, which opposes the blowout surface material. A static electricity removal device is disposed on a downstream side of the blowout surface material.Type: GrantFiled: March 26, 2018Date of Patent: October 6, 2020Assignees: NIHON SPINDLE MANUFACTURING CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Masahiro Yanagida, Kenji Izumi, Teppei Taniguchi
-
Publication number: 20200251740Abstract: Provided is a nonaqueous binder for electrodes or separators, which is used in a lithium ion battery that has excellent cycle life characteristics at high temperatures. A nonaqueous binder for electrodes or separators of lithium ion batteries, which is obtained by complexing cellulose nanofibers and a thermoplastic fluororesin, and which is characterized in that the cellulose nanofibers have a fiber size (diameter) of from 0.002 ?m to 1 ?m (inclusive), a fiber length of from 0.5 ?m to 10 mm (inclusive), and an aspect ratio ((fiber length of cellulose nanofibers)/(fiber diameter of cellulose nanofibers)) of from 2 to 100,000 (inclusive).Type: ApplicationFiled: September 29, 2017Publication date: August 6, 2020Applicants: ATTACCATO LIMITED LIABILITY COMPANY, THE JAPAN STEEL WORKS, LTD.Inventors: Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Naoto YAMASHITA, Ryo ISHIGURO, Satoru NAKAMURA
-
Patent number: 10720629Abstract: A conventional bipolar battery is constituted of a combination of cells hermetically sealed for preventing a liquid junction and preventing corrosion of a peripheral device due to a liquid leakage. Therefore, electrolytic solution injecting processes are carried out as many as the number of cells, so that much times and costs have been required for manufacturing a large-scale battery. In addition, a wiring space has been required since the cells are connected to one another with wires. The use of a current collector formed of a one-end closed tubular conductor, the current collector having a bottom protruding outward to form a protrusion, eliminates the wiring space and achieves a reduction in ohmic loss due to the wires. In addition, an electrolytic solution in one cell is separated by a water-repellent sheet from an electrolytic solution in another cell, so that a liquid junction is prevented.Type: GrantFiled: February 26, 2016Date of Patent: July 21, 2020Assignee: EXERGY POWER SYSTEMS, INC.Inventors: Kaduo Tsutsumi, Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita
-
Patent number: 10518350Abstract: An arc welding apparatus includes: a welding-condition acquirer configured to acquire a welding condition; a heat-input calculator configured to calculate a required heat input corresponding to the welding condition; a frequency setter configured to set a smaller frequency for a short circuit condition and an arc condition corresponding to an increase in the required heat input; and a driver configured to repeatedly perform a process at the frequency, the process including advancing and retreating a welding consumable with respect to a workpiece to generate the short circuit condition and the arc condition.Type: GrantFiled: June 4, 2014Date of Patent: December 31, 2019Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi Murakami, Taichi Sakamoto
-
Patent number: 10493551Abstract: An arc welding apparatus includes: a driver for advancing and retreating a welding consumable with respect to a workpiece to generate a short circuit condition and an arc condition; a state detector for detecting respective starts of the short circuit condition and the arc condition based on a voltage between the workpiece and the welding consumable; a time detector for detecting that an elapsed time from the start of the short circuit condition reaches a reference time using a time shorter than an estimated continuation time of the short circuit condition as the reference time; and a power controller for reducing an electric current between the workpiece and the welding consumable corresponding to a state where the elapsed time reaches the reference time and raising the electric current after the start of the arc condition.Type: GrantFiled: June 4, 2014Date of Patent: December 3, 2019Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi Murakami, Taichi Sakamoto
-
Publication number: 20190326601Abstract: To provide a negative electrode of a lithium ion battery excellent in cycle life characteristics. The negative electrode for a lithium ion battery includes an Si-based material as an active material, wherein a skeleton-forming agent including a silicate having a siloxane bond or a phosphate having an aluminophosphate bond as an ingredient is present on the surface and inside of an active material layer, and the skeleton of the active material is formed with the skeleton-forming agent.Type: ApplicationFiled: March 25, 2017Publication date: October 24, 2019Applicants: ATTACCATO Limited Liability Company, ATTACCATO Limited Liability CompanyInventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita, Daichi Iwanari, Kazuma Yoshida, Kazuyoshi Tanaka
-
Publication number: 20190027732Abstract: A conventional bipolar battery is constituted of a combination of cells hermetically sealed for preventing a liquid junction and preventing corrosion of a peripheral device due to a liquid leakage. Therefore, electrolytic solution injecting processes are carried out as many as the number of cells, so that much times and costs have been required for manufacturing a large-scale battery. In addition, a wiring space has been required since the cells are connected to one another with wires. The use of a current collector formed of a one-end closed tubular conductor, the current collector having a bottom protruding outward to form a protrusion, eliminates the wiring space and achieves a reduction in ohmic loss due to the wires. In addition, an electrolytic solution in one cell is separated by a water-repellent sheet from an electrolytic solution in another cell, so that a liquid junction is prevented.Type: ApplicationFiled: February 26, 2016Publication date: January 24, 2019Applicant: Exergy Power Systems, Inc.Inventors: Kaduo Tsutsumi, Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita
-
Patent number: 10141573Abstract: The teachings herein are directed at a lithium secondary battery negative electrode active material consisting of a Sn Sb based sulfide that delivers a high electrode capacity density, excellent output characteristics, and excellent cycle life characteristics and also provide a method for manufacturing the lithium secondary battery negative electrode active material, said method being capable of easily manufacturing the high performance lithium secondary battery negative electrode active material at low cost without requiring a high-temperature processing step and special facilities as required in a glass melting method. The negative electrode active material preferably is prepared using a method that includes a step of obtaining a Sn Sb based sulfide precipitate by adding an alkali metal sulfide to a mixed solution of a tin halide and an antimony halide.Type: GrantFiled: February 26, 2014Date of Patent: November 27, 2018Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, ISUZU GLASS LTD.Inventors: Takashi Mukai, Taichi Sakamoto, Yuta Ikeuchi, Tetsuo Sakai, Naoto Yamashita, Koichiro Ikeda, Kiichiro Yamaguchi
-
Publication number: 20180213631Abstract: There is provided a static electricity removal structure in a low-humidity space, in which static electricity can be removed with high efficiency in the low-humidity space by using a static electricity removal device. A low-humidity space is configured such that dehumidified air is supplied from one side of the low-humidity space into the low-humidity space through a blowout surface material in which ventilation pore is formed, and exhausting is performed from the other side of the low-humidity space, which opposes the blowout surface material. A static electricity removal device is disposed on a downstream side of the blowout surface material.Type: ApplicationFiled: March 26, 2018Publication date: July 26, 2018Inventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Masahiro Yanagida, Keiji Izumi, Teppei Taniguchi
-
Publication number: 20180183047Abstract: Provided is a method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery containing an alkali metal complex oxide, the method making it possible to reliably deaerate surplus carbonic acid gas after an alkali component of a slurry containing the alkali metal complex oxide is neutralized within a short period of time. The method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery includes a step of manufacturing an electrode slurry including a step of performing a neutralization treatment on an alkali component in the slurry by using inorganic carbon dissolved in a solvent of the slurry and a step of deaerating the inorganic carbon in the slurry as carbonic acid gas by causing cavitation.Type: ApplicationFiled: February 20, 2018Publication date: June 28, 2018Inventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita, Masahiro Yanagida, Keiichi Asami, Keiichiro Onishi
-
Patent number: 9770777Abstract: An arc welding apparatus includes: a detector configured to detect whether it is in a short state or an arc state between a consumable electrode and a welded article; a feed adjuster configured to apply a forward feed for feeding the consumable electrode when the arc state is detected and apply a reverse feed for feeding the consumable electrode when the short state is detected; a determiner configured to determine whether or not a predetermined period has elapsed after the detector has detected the short state; and an instructor configured to instruct the feed adjuster to continue the reverse feed even when the arc state is detected, until the determiner determines that the predetermined period has elapsed.Type: GrantFiled: September 18, 2014Date of Patent: September 26, 2017Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi Murakami, Taichi Sakamoto
-
Patent number: 9553308Abstract: Problem. Provided is a negative electrode material for a sodium secondary battery and its manufacturing method, and a negative electrode for a sodium secondary battery, and a sodium secondary battery, wherein the negative electrode material can have excellent cycle characteristics while maintaining high discharge capacity. Solution. A negative electrode material for a sodium secondary battery according to the present invention includes sulfide or sulfide composite body containing sulfur and antimony, and as necessary further includes the following component(s) of (i): (i) at least one or more element(s) selected from a group consisting of Sn, As, Bi, Ge, Ga, Pb, and C, wherein when a component(s) of (i) is included, the ratio of each of the above described components is sulfur: 10 to 70 mol %, antimony: 10 to 70 mol %, and (i): 3 to 60 mol %.Type: GrantFiled: November 1, 2012Date of Patent: January 24, 2017Assignees: ISUZU GLASS CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Koichiro Ikeda, Yuta Ikeuchi, Takashi Mukai, Tetsuo Sakai, Taichi Sakamoto, Kunihiko Tani, Kiichiro Yamaguchi, Naoto Yamashita
-
Publication number: 20160072127Abstract: Problem: To provide a lithium secondary battery negative electrode active material consisting of a Sn—Sb based sulfide that delivers a high electrode capacity density, excellent output characteristics, and excellent cycle life characteristics and also provide a method for manufacturing the lithium secondary battery negative electrode active material, said method being capable of easily manufacturing the high performance lithium secondary battery negative electrode active material at low cost without requiring a high-temperature processing step and special facilities as required in a glass melting method. Solution: A method for manufacturing a lithium secondary battery negative electrode active material containing a Sn—Sb based sulfide comprises a step of obtaining a Sn—Sb based sulfide precipitate by adding an alkali metal sulfide to a mixed solution of a tin halide and an antimony halide.Type: ApplicationFiled: February 26, 2014Publication date: March 10, 2016Inventors: Takashi MUKAI, Taichi SAKAMOTO, Yuta IKEUCHI, Tetsuo SAKAI, Naoto YAMASHITA, Koichiro IKEDA, Kiichiro YAMAGUCHI
-
Publication number: 20150280220Abstract: Problem. Provided is a negative electrode material for a sodium secondary battery and its manufacturing method, and a negative electrode for a sodium secondary battery, and a sodium secondary battery, wherein the negative electrode material can have excellent cycle characteristics while maintaining high discharge capacity. Solution. A negative electrode material for a sodium secondary battery according to the present invention includes sulfide or sulfide composite body containing sulfur and antimony, and as necessary further includes the following component(s) of (i): (i) at least one or more element(s) selected from a group consisting of Sn, As, Bi, Ge, Ga, Pb, and C, wherein when a component(s) of (i) is included, the ratio of each of the above described components is sulfur: 10 to 70 mol %, antimony: 10 to 70 mol %, and (i): 3 to 60 mol %.Type: ApplicationFiled: November 1, 2012Publication date: October 1, 2015Inventors: Takashi MUKAI, Taichi SAKAMOTO, Yuta IKEUCHI, Tetsuo SAKAI, Kunihiko TANI, Naoto YAMASHITA, Koichiro IKEDA, Kiichiro YAMAGUCHI
-
Patent number: 9070941Abstract: [Object] The object is to provide a negative electrode material for a lithium secondary battery, wherein a sulfide-based negative electrode with water-resistant properties can exert excellent cycle characteristics and high output performance while maintaining a high discharge capacity and there is no precipitation of lithium dendrites during charge at low temperature. [Means for Solving Problems] A negative electrode material for a lithium secondary battery comprising sulfur and sulfide glass including the following components (i) and (ii): (i) at least one or more elements selected from a group consisting of Sb, As, Bi, Ge, Si, Cu, Zn, Pd, In and Zr; and (ii) at least one or more elements selected from a group consisting of Se, Te, Ga, Sn, Pb, Cd, Al, Fe, Mg, Ca, Co, Ag, Sr, P and Ba, wherein the ratio of the above components is sulfur: 40-80 mol %, (i): 1-50 mol % and (ii): 1-50 mol %, respectively.Type: GrantFiled: December 9, 2011Date of Patent: June 30, 2015Assignees: National Institute of Advanced Industrial Science and Technology, Isuzu Glass Company, Ltd.Inventors: Takashi Mukai, Taichi Sakamoto, Tetsuo Sakai, Kunihiko Tani, Naoto Yamashita, Koichiro Ikeda
-
Publication number: 20150076132Abstract: An arc welding apparatus includes: a detector configured to detect whether it is in a short state or an arc state between a consumable electrode and a welded article; a feed adjuster configured to apply a forward feed for feeding the consumable electrode when the arc state is detected and apply a reverse feed for feeding the consumable electrode when the short state is detected; a determiner configured to determine whether or not a predetermined period has elapsed after the detector has detected the short state; and an instructor configured to instruct the feed adjuster to continue the reverse feed even when the arc state is detected, until the determiner determines that the predetermined period has elapsed.Type: ApplicationFiled: September 18, 2014Publication date: March 19, 2015Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi MURAKAMI, Taichi SAKAMOTO
-
Publication number: 20140360995Abstract: An arc welding apparatus includes: a driver for advancing and retreating a welding consumable with respect to a workpiece to generate a short circuit condition and an arc condition; a state detector for detecting respective starts of the short circuit condition and the arc condition based on a voltage between the workpiece and the welding consumable; a time detector for detecting that an elapsed time from the start of the short circuit condition reaches a reference time using a time shorter than an estimated continuation time of the short circuit condition as the reference time; and a power controller for reducing an electric current between the workpiece and the welding consumable corresponding to a state where the elapsed time reaches the reference time and raising the electric current after the start of the arc condition.Type: ApplicationFiled: June 4, 2014Publication date: December 11, 2014Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi MURAKAMI, Taichi SAKAMOTO
-
Publication number: 20140360996Abstract: An arc welding apparatus includes: a welding-condition acquirer configured to acquire a welding condition; a heat-input calculator configured to calculate a required heat input corresponding to the welding condition; a frequency setter configured to set a smaller frequency for a short circuit condition and an arc condition corresponding to an increase in the required heat input; and a driver configured to repeatedly perform a process at the frequency, the process including advancing and retreating a welding consumable with respect to a workpiece to generate the short circuit condition and the arc condition.Type: ApplicationFiled: June 4, 2014Publication date: December 11, 2014Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi MURAKAMI, Taichi SAKAMOTO
-
Publication number: 20140054492Abstract: [Object] The object is to provide a negative electrode material for a lithium secondary battery, wherein a sulfide-based negative electrode with water-resistant properties can exert excellent cycle characteristics and high output performance while maintaining a high discharge capacity and there is no precipitation of lithium dendrites during charge at low temperature. [Means for Solving Problems] A negative electrode material for a lithium secondary battery comprising sulfur and sulfide glass including the following components (i) and (ii): (i) at least one or more elements selected from a group consisting of Sb, As, Bi, Ge, Si, Cu, Zn, Pd, In and Zr; and (ii) at least one or more elements selected from a group consisting of Se, Te, Ga, Sn, Pb, Cd, Al, Fe, Mg, Ca, Co, Ag, Sr, P and Ba, wherein the ratio of the above components is sulfur: 40-80 mol %, (i): 1-50 mol % and (ii): 1-50 mol %, respectively.Type: ApplicationFiled: December 9, 2011Publication date: February 27, 2014Applicant: ISUZU GLASS CO. LTDInventors: Takashi Mukai, Taichi Sakamoto, Tetsuo Sakai, Kumihiko Tani, Naoto Yamashita, Kouichiro Ikeda