Patents by Inventor Takahiro Matsumura
Takahiro Matsumura 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: 11912036Abstract: An ink tank that enables to check whether a cover of an ink tank is normally bonded to the ink tank includes a first chamber having a supply port for supplying ink to a printing head that ejects ink, a second chamber having an external air introduction port capable of introducing external air, a partition wall configured to separate the first chamber and the second chamber, a communication path provided in the partition wall and configured to place the first chamber and the second chamber in communication with each other, a first cover member configured to cover an opening of the first chamber without extending over an opening of the second chamber, and a second cover member configured to cover the opening of the second chamber without extending over the opening of the first chamber.Type: GrantFiled: September 29, 2021Date of Patent: February 27, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Koki Shimada, Hideaki Matsumura, Masaya Shimmachi, Yukimichi Kimura, Junichi Kubokawa, Takahiro Kiuchi, Yusuke Tanaka, Kyohei Sato
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Publication number: 20220153591Abstract: To provide a carbon electrode material that is capable of decreasing cell resistance during initial charging and discharging to improve battery energy efficiency. A carbon electrode material for a negative electrode of a manganese/titanium-based redox flow battery including carbon fibers (A), carbon particles (B) other than graphite particles, and a carbon material (C) for binding the carbon fibers (A) and the carbon particles (B) other than graphite particles and satisfying (1) a particle diameter of the carbon particles (B), (2) Lc(B), (3) Lc(C)/Lc(A), (4) A mesopore specific surface area, and (5) a number of oxygen atoms bound to the surface of the carbon electrode material.Type: ApplicationFiled: March 6, 2020Publication date: May 19, 2022Applicants: TOYOBO CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kana Morimoto, Masaru Kobayashi, Ryouhei Iwahara, Takahiro Matsumura, Masayuki Oya, Yongrong Dong, Yoshiyasu Kawagoe, Koichi Hashimoto
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Publication number: 20220149370Abstract: A carbon electrode material includes carbon fibers (A); carbon particles (B) other than graphite particles; carbon material (C) for binding the carbon fibers (A) and the carbon particles (B) to each other, and the carbon electrode material satisfies: (1) a particle diameter of the carbon particles (B) other than graphite particles is not larger than 1 ?m, (2) Lc(B) is not larger than 10 nm when Lc(B) represents a crystallite size, in a c-axis direction, obtained by X-ray diffraction in the carbon particles (B) other than graphite particles, (3) Lc(C)/Lc(A) is 1.0 to 5.0, (4) a meso-pore specific surface area obtained from a nitrogen gas adsorption amount is less than 30 m2/g, and (5) a number of oxygen atoms bound to a surface of the carbon electrode material is not less than 1% of a total number of carbon atoms on the surface of the carbon electrode material.Type: ApplicationFiled: March 12, 2020Publication date: May 12, 2022Applicant: TOYOBO CO., LTD.Inventors: Kana Nishi, Ryohei Iwahara, Masaru Kobayashi, Takahiro Matsumura
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Publication number: 20220140355Abstract: To provide a carbon electrode material which is capable of decreasing cell resistance during initial charging and discharging while improving oxidation resistance to Mn ions. A carbon electrode material for a redox flow battery, including carbon fibers (A), graphite particles (B), and a carbon material (C) for binding the carbon fibers (A) and the graphite particles (B), the carbon electrode material satisfying (1) Lc(C), (2) Lc(C)/Lc(A), (3) an average curvature of the carbon fibers (A), and (4) a number of oxygen atoms bound to a surface of the carbon electrode material.Type: ApplicationFiled: March 6, 2020Publication date: May 5, 2022Applicants: TOYOBO CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Ryouhei Iwahara, Masaru Kobayashi, Takahiro Matsumura, Kana Morimoto, Masayuki Oya, Yongrong Dong, Kenichi Itou, Takahiro Ikegami
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Patent number: 11101466Abstract: A carbon electrode material is disclosed for a redox flow battery that particularly, even when using an Mn—Ti type electrolyte, while stabilizing Mn ions and suppressing a rise in cell resistance during initial charge and discharge, has excellent oxidation resistance. The electrode material includes a carbonaceous fiber, and a carbonaceous material for binding the carbonaceous fiber, and satisfies the requirements: (1) when the size of a crystallite in a c axis direction found by X-ray diffraction in the carbonaceous material (B) is Lc(B), Lc(B) is 10 nm or greater; (2) when the size of the crystallite in the c axis direction found by X-ray diffraction in the carbonaceous fiber (A) is Lc(A), Lc(B)/Lc(A) is 1.0 or greater; and (3) the number of bonded oxygen atoms of the carbon electrode material surface is 1.0% or greater than the total number of carbon atoms of the carbon electrode material surface.Type: GrantFiled: August 29, 2018Date of Patent: August 24, 2021Assignees: TOYOBO CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Toshikatsu Enjoji, Takahiro Matsumura, Ryouhei Iwahara, Masaru Kobayashi, Masako Tatsuta, Yongrong Dong, Masayuki Oya, Kenichi Itou, Yoshiyasu Kawagoe
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Publication number: 20200373583Abstract: A carbon electrode material is disclosed for a redox flow battery that particularly, even when using an Mn—Ti type electrolyte, while stabilizing Mn ions and suppressing a rise in cell resistance during initial charge and discharge, has excellent oxidation resistance. The electrode material includes a carbonaceous fiber, and a carbonaceous material for binding the carbonaceous fiber, and satisfies the requirements: (1) when the size of a crystallite in a c axis direction found by X-ray diffraction in the carbonaceous material (B) is Lc(B), Lc(B) is 10 nm or greater; (2) when the size of the crystallite in the c axis direction found by X-ray diffraction in the carbonaceous fiber (A) is Lc(A), Lc(B)/Lc(A) is 1.0 or greater; and (3) the number of bonded oxygen atoms of the carbon electrode material surface is 1.0% or greater than the total number of carbon atoms of the carbon electrode material surface.Type: ApplicationFiled: August 29, 2018Publication date: November 26, 2020Applicants: TOYOBO CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Toshikatsu Enjoji, Takahiro Matsumura, Ryouhei Iwahara, Masaru Kobayashi, Masako Tatsuta, Yongrong Dong, Masayuki Oya, Kenichi Itou, Yoshiyasu Kawagoe
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Patent number: 10753484Abstract: A pin-fastening structure includes a first shaft portion provided in a valve shaft; a cylindrical portion into which the first shaft portion is fitted, the cylindrical portion being provided in a valve body; and a connecting pin that passes through both the first shaft portion and the cylindrical portion in a state in which the first shaft portion is fitted into the cylindrical portion and that restricts relative movement of the first shaft portion and the cylindrical portion in an axial direction. The first shaft portion has a first end surface perpendicular to the axis of the valve shaft. The cylindrical portion has second end surfaces perpendicular to the axis of the valve body. The first shaft portion and the cylindrical portion are fastened by the connecting pin in a state in which the first end surface and the second end surfaces are in contact with each other.Type: GrantFiled: November 28, 2018Date of Patent: August 25, 2020Assignee: AZBIL CORPORATIONInventors: Takahiro Matsumura, Yoshio Nomaguchi, Tomonori Shintani
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Publication number: 20190162315Abstract: A pin-fastening structure includes a first shaft portion provided in a valve shaft; a cylindrical portion into which the first shaft portion is fitted, the cylindrical portion being provided in a valve body; and a connecting pin that passes through both the first shaft portion and the cylindrical portion in a state in which the first shaft portion is fitted into the cylindrical portion and that restricts relative movement of the first shaft portion and the cylindrical portion in an axial direction. The first shaft portion has a first end surface perpendicular to the axis of the valve shaft. The cylindrical portion has second end surfaces perpendicular to the axis of the valve body. The first shaft portion and the cylindrical portion are fastened by the connecting pin in a state in which the first end surface and the second end surfaces are in contact with each other.Type: ApplicationFiled: November 28, 2018Publication date: May 30, 2019Applicant: AZBIL CORPORATIONInventors: Takahiro MATSUMURA, Yoshio Nomaguchi, Tomonori Shintani
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Patent number: 10131002Abstract: A polygonal cutting has opposing first and second end surfaces connected by a side surface, and a plurality of cutting edges formed between the end surfaces and the side surface. Each cutting edge is formed at corner and includes a corner cutting edge and a major cutting edge connected to the corner cutting edge. A rake surface formed along the cutting edge on first the end surface is inclined toward the second end surface. In a side view of the cutting insert, the major cutting edge includes an inclined part which is inclined so as to approach the second end surface from the corner cutting edge. A portion of the rake surface along the inclined part is formed such that an angle of inclination toward the second end surface increases toward the corner in a direction along the intersecting edge between the first end surface and the side surface.Type: GrantFiled: May 25, 2015Date of Patent: November 20, 2018Assignee: TUNGALOY CORPORATIONInventors: Takahiro Matsumura, Satoru Yoshida
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Patent number: 10010950Abstract: A cutting insert has an upper surface, a lower surface, a side surface connecting the upper and lower surfaces. An intersecting edge between the upper surface and the side surface is provided with a cutting edge. The cutting edge has, in order, a second major cutting edge, a first major cutting edge, a corner cutting edge connected to these major cutting edges, and a flat cutting edge. An obtuse interior first angle (?) is formed by the second and first major cutting edges. A interior second angle (?) formed by the flat cutting edge and the first major cutting edge is larger than an interior third angle (?) formed by the flat cutting edge and the second major cutting edge. A land is provided adjacent to the first major cutting edge, a width of the land increasing toward the first corner cutting edge.Type: GrantFiled: March 26, 2015Date of Patent: July 3, 2018Assignee: TUNGALOY CORPORATIONInventors: Takahiro Matsumura, Satoru Yoshida
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Publication number: 20170225243Abstract: A cutting insert has an upper surface, a lower surface, a side surface connecting the upper and lower surfaces. An intersecting edge between the upper surface and the side surface is provided with a cutting edge. The cutting edge has, in order, a second major cutting edge, a first major cutting edge, a corner cutting edge connected to these major cutting edges, and a flat cutting edge. An obtuse interior first angle (?) is formed by the second and first major cutting edges. A interior second angle (?) formed by the flat cutting edge and the first major cutting edge is larger than an interior third angle (?) formed by the flat cutting edge and the second major cutting edge. A land is provided adjacent to the first major cutting edge, a width of the land increasing toward the first corner cutting edge.Type: ApplicationFiled: March 26, 2015Publication date: August 10, 2017Applicant: TUNGALOY CORPORATIONInventors: TAKAHIRO MATSUMURA, Satoru YOSHIDA
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Publication number: 20170189972Abstract: A polygonal cutting has opposing first and second end surfaces connected by a side surface, and a plurality of cutting edges formed between the end surfaces and the side surface. Each cutting edge is formed at corner and includes a corner cutting edge and a major cutting edge connected to the corner cutting edge. A rake surface formed along the cutting edge on first the end surface is inclined toward the second end surface. In a side view of the cutting insert, the major cutting edge includes an inclined part which is inclined so as to approach the second end surface from the corner cutting edge. A portion of the rake surface along the inclined part is formed such that an angle of inclination toward the second end surface increases toward the corner in a direction along the intersecting edge between the first end surface and the side surface.Type: ApplicationFiled: May 25, 2015Publication date: July 6, 2017Inventors: Takahiro MATSUMURA, Satoru YOSHIDA
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Patent number: 9308923Abstract: In a regenerative braking emergency stop system, a substation includes: a rectifier transformer configured to transform AC power received from outside; a rectifier configured to convert the transformed AC power into DC power; and a switch disposed on an electrical path between the rectifier and a power-feed rail and configured to be in a closed state or an opened state; a simulated ripple transmitter configured to transmit a simulated ripple, the simulated ripple being an AC signal having a predetermined frequency; a superimposing circuit connected to the power-feed rail in parallel with the rectifier and configured to superimpose the simulated ripple transmitted from the simulated ripple transmitter on DC power outputted from the rectifier; and a relay device configured to allow the simulated ripple transmitter to transmit the simulated ripple when the rectifier is receiving power from outside and the switch is in a closed state.Type: GrantFiled: October 31, 2011Date of Patent: April 12, 2016Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takahiro Matsumura, Shingo Okamura, Chiyoharu Tonda, Eiji Yoshiyama
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Publication number: 20150135959Abstract: [Problem] To provide a deoxidation apparatus (4) with improved efficiency in absorbing degassing gas and dissolved oxygen in treated water. [Solution] A deoxidation apparatus (4) in which by bringing the degassing gas into contact with the treated water, causes dissolved oxygen in treated water to be absorbed by degassing gas and lowers the dissolved oxygen concentration of the treated water. The deoxidation apparatus includes the following: a gas-liquid contact tower (42) that has the shape of a lower end open container, at least the lower end of which is submerged below the surface of the treated water that is to be treated, forming an internal sealed space (421); a degassing gas supply unit (43) that supplies degassing gas to the sealed space (421), filling the sealed space (421) with degassing gas; and a treated water dispersion unit (41) that disperses the supplied treated water within the sealed space (421) in the form of a mist through a dispersion nozzle unit (412).Type: ApplicationFiled: August 30, 2012Publication date: May 21, 2015Inventors: Masahiro Takatsuka, Hiroshi Okajima, Takahiro Matsumura, Hiromu Akita, Daisuke Koiwai
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Patent number: 9035485Abstract: A power conditioner for a feeding system which stabilizes a load of active power is provided. A power conditioner for a feeding system comprises a first AC-DC and DC-AC converter for performing conversion between AC power and DC power; and a nickel-metal hydride battery disposed between and connected to a high-voltage cable at DC side of the first AC-DC and DC-AC converter and a low-voltage cable at the DC side of the first AC-DC and DC-AC converter.Type: GrantFiled: March 19, 2010Date of Patent: May 19, 2015Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuo Tsutsumi, Takahiro Matsumura, Chiyoharu Tonda
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Publication number: 20150094884Abstract: In a regenerative braking emergency stop system, a substation includes: a rectifier transformer configured to transform AC power received from outside; a rectifier configured to convert the transformed AC power into DC power; and a switch disposed on an electrical path between the rectifier and a power-feed rail and configured to be in a closed state or an opened state; a simulated ripple transmitter configured to transmit a simulated ripple, the simulated ripple being an AC signal having a predetermined frequency; a superimposing circuit connected to the power-feed rail in parallel with the rectifier and configured to superimpose the simulated ripple transmitted from the simulated ripple transmitter on DC power outputted from the rectifier; and a relay device configured to allow the simulated ripple transmitter to transmit the simulated ripple when the rectifier is receiving power from outside and the switch is in a closed state.Type: ApplicationFiled: October 31, 2011Publication date: April 2, 2015Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takahiro Matsumura, Shingo Okamura, Chiyoharu Tonda, Eiji Yoshiyama
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Publication number: 20140373167Abstract: A leaked information tracing technique enabling a recipient of leaked information to be identified. A trace center apparatus includes a tracer generation and registration part which issues a tracer identification number uniquely identifying both of a content residing on different computer and a tracer, generates a tracer program having the function of reporting identification information of a computer on which the content resides and the tracer identification number to a trace center, and registers the tracer program with the trace center.Type: ApplicationFiled: August 8, 2013Publication date: December 18, 2014Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takahiro Matsumura, Toshihiro Motoda, Shinichi Nakahara
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Patent number: 8598739Abstract: To present an electric railway power-supply system not requiring vast area for installation, excellent in rapid charge-discharge characteristic, and low in manufacturing cost. At a substation 9 for electric railway having a transformer 3 for receiving power from an alternating-current power line 2, a rectifying device 4 connected to the transformer 3, and a feeder line 5 connected to the rectifying device 4, a nickel hydrogen battery 8 is provided as a direct-current supply facility, and the nickel hydrogen battery 8 is directly coupled to the feeder line 5.Type: GrantFiled: February 26, 2009Date of Patent: December 3, 2013Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kazuo Tsutsumi, Takahiro Matsumura, Chiyoharu Tonda, Kazuya Nishimura, Fumiya Goto
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Publication number: 20120091806Abstract: A power conditioner for a feeding system which stabilizes a load of active power is provided. A power conditioner for a feeding system comprises a first AC-DC and DC-AC converter for performing conversion between AC power and DC power; and a nickel-metal hydride battery disposed between and connected to a high-voltage cable at DC side of the first AC-DC and DC-AC converter and a low-voltage cable at the DC side of the first AC-DC and DC-AC converter.Type: ApplicationFiled: March 19, 2010Publication date: April 19, 2012Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuo Tsutsumi, Takahiro Matsumura, Chiyoharu Tonda
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Publication number: 20110065021Abstract: [Object] To provide a proton exchange membrane for a fuel cell having excellent proton conductivity, lower property of swelling with hot water, and excellent durability, as well as a block copolymer forming the proton exchange membrane, and a composition, a molded product, a fuel cell proton exchange membrane electrode assembly, and a fuel cell.Type: ApplicationFiled: May 8, 2009Publication date: March 17, 2011Applicant: TOYO BOSEKI KABUSHIKI KAISHAInventors: Kouta Kitamura, Shunsuke Ichimura, Yoshimitsu Sakaguchi, Yoshiko Akitomo, Akira Nishimoto, Masahiro Yamashita, Kousuke Sasai, Takahiro Matsumura