Patents by Inventor Takeshi Tokunaga
Takeshi Tokunaga 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: 11952344Abstract: Provided is a heterocyclic compound that can have an antagonistic action on an NMD A receptor containing the NR2B subunit and that is expected to be useful as a prophylactic or therapeutic agent for depression, bipolar disorder, migraine, pain, peripheral symptoms of dementia and the like. A compound represented by the formula (I), wherein each symbol is as defined in the DESCRIPTION, or a salt thereof.Type: GrantFiled: September 25, 2020Date of Patent: April 9, 2024Assignee: Takeda Pharmaceutical Company LimitedInventors: Yuya Oguro, Makoto Kamata, Shuhei Ikeda, Takeshi Wakabayashi, Norihito Tokunaga, Taku Kamei, Mitsuhiro Ito, Shigemitsu Matsumoto, Hirotaka Kamitani, Takaharu Hirayama, Toshio Tanaka, Hiroshi Banno, Nobuyuki Takakura, Jinichi Yonemori, Takuya Fujimoto
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Patent number: 11920786Abstract: A regenerative burner including: a combustion chamber; a heat exchange chamber; and a communication passage therebetween, the combustion chamber includes a tip of a fuel nozzle and a flame ejection port, and is configured such that fuel introduced from the fuel nozzle into the combustion chamber can be burned in the combustion chamber using combustion air introduced into the combustion chamber through the communication passage to eject flame from the flame ejection port; the fuel nozzle is configured such that fuel burned in the regenerative burner is introduced into the combustion chamber; and the heat exchange chamber comprises a heat accumulator interposed between the communication passage and an air port, and is configured such that combustion air can pass through the heat accumulator and then be introduced into the combustion chamber such that an exhaust gas passes through the heat accumulator and is discharged from the air port.Type: GrantFiled: October 30, 2018Date of Patent: March 5, 2024Assignee: NGK INSULATORS, LTD.Inventors: Satoshi Taniguchi, Takeshi Tokunaga
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Patent number: 11796252Abstract: A continuous heating furnace including an inlet, a heating zone, a cooling zone and an outlet in this order, for carrying out a heat treatment while conveying at least one workpiece from the inlet to the outlet, wherein the cooling zone is configured such that an ambient gas for direct cooling of the workpiece can flow into the cooling zone from the outlet; the cooling zone includes a plurality of indirect coolers arranged in parallel in the conveying direction of the workpiece, each of the indirect coolers having at least one regulator for independently adjusting a cooling power; and the cooling zone includes one or more residual heat outlets for discharging a residual heat gas in the cooling zone.Type: GrantFiled: August 14, 2019Date of Patent: October 24, 2023Assignee: NGK INSULATORS, LTD.Inventors: Satoshi Taniguchi, Takeshi Tokunaga
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Patent number: 11136272Abstract: The present disclosure is related to a method of producing a fired ceramic article. The method may include: heating a ceramic green body in a kiln, and controlling oxygen concentration in the kiln such that the oxygen concentration swings during the heating of the ceramic green body.Type: GrantFiled: November 20, 2018Date of Patent: October 5, 2021Assignee: NGK Insulators, Ltd.Inventors: Daniel Yukichi Kitaguchi, Takeshi Tokunaga
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Patent number: 10969175Abstract: A setter for firing in a plate which is used for firing a honeycomb formed body and interposed between the honeycomb formed body and a shelf plate, wherein the setter for firing has a setter lower surface section facing the shelf plate, the setter lower surface section including: a central region part formed by a region including a lower surface center of the setter lower surface section; and a peripheral region part formed by a peripheral region of the central region part, and the peripheral region part has at least four or more setter groove parts each having a recessed cross sectional shape and extending radially from the lower surface center respectively in a direction from a boundary with the central region part toward a setter outer circumferential section.Type: GrantFiled: July 24, 2018Date of Patent: April 6, 2021Assignee: NGK Insulators, Ltd.Inventor: Takeshi Tokunaga
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Publication number: 20200064069Abstract: A continuous heating furnace including an inlet, a heating zone, a cooling zone and an outlet in this order, for carrying out a heat treatment while conveying at least one workpiece from the inlet to the outlet, wherein the cooling zone is configured such that an ambient gas for direct cooling of the workpiece can flow into the cooling zone from the outlet; the cooling zone includes a plurality of indirect coolers arranged in parallel in the conveying direction of the workpiece, each of the indirect coolers having at least one regulator for independently adjusting a cooling power; and the cooling zone includes one or more residual heat outlets for discharging a residual heat gas in the cooling zone.Type: ApplicationFiled: August 14, 2019Publication date: February 27, 2020Applicant: NGK INSULATORS, LTD.Inventors: Satoshi TANIGUCHI, Takeshi TOKUNAGA
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Publication number: 20190218147Abstract: The present disclosure is related to a method of producing a fired ceramic article. The method may include: heating a ceramic green body in a kiln, and controlling oxygen concentration in the kiln such that the oxygen concentration swings during the heating of the ceramic green body.Type: ApplicationFiled: November 20, 2018Publication date: July 18, 2019Applicant: NGK INSULATORS, LTD.Inventors: Daniel Yukichi Kitaguchi, Takeshi Tokunaga
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Publication number: 20190137099Abstract: A regenerative burner including: a combustion chamber; a heat exchange chamber; and a communication passage therebetween, the combustion chamber includes a tip of a fuel nozzle and a flame ejection port, and is configured such that fuel introduced from the fuel nozzle into the combustion chamber can be burned in the combustion chamber using combustion air introduced into the combustion chamber through the communication passage to eject flame from the flame ejection port; the fuel nozzle is configured such that fuel burned in the regenerative burner is introduced into the combustion chamber; and the heat exchange chamber comprises a heat accumulator interposed between the communication passage and an air port, and is configured such that combustion air can pass through the heat accumulator and then be introduced into the combustion chamber such that an exhaust gas passes through the heat accumulator and is discharged from the air port.Type: ApplicationFiled: October 30, 2018Publication date: May 9, 2019Applicant: NGK INSULATORS, LTD.Inventors: Satoshi TANIGUCHI, Takeshi TOKUNAGA
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Publication number: 20180328667Abstract: A setter for firing in a plate which is used for firing a honeycomb formed body and interposed between the honeycomb formed body and a shelf plate, wherein the setter for firing has a setter lower surface section facing the shelf plate, the setter lower surface section including: a central region part formed by a region including a lower surface center of the setter lower surface section; and a peripheral region part formed by a peripheral region of the central region part, and the peripheral region part has at least four or more setter groove parts each having a recessed cross sectional shape and extending radially from the lower surface center respectively in a direction from a boundary with the central region part toward a setter outer circumferential section.Type: ApplicationFiled: July 24, 2018Publication date: November 15, 2018Applicant: NGK INSULATORS, LTD.Inventor: Takeshi TOKUNAGA
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Patent number: 10101254Abstract: A detecting apparatus includes: a lifting mechanism section that is provided with a lifting portion for lifting honeycomb structures and a shelf plate; an actual load value measuring section that measures an actual load value; a total load value calculating section that adds up the plurality of measured actual load value; a total load value determining section that compares a standard total weight value of the honeycomb structures and the shelf plate to the total load value and determines whether to satisfy a total load value determining condition; an actual load value determining section that compares the actual load value to the specified load value and determines whether to satisfy an actual load value determining condition; and a shelf-plate crack determining section that determines that the shelf plate is cracked when the total load value determining condition or the actual load value determining condition is not satisfied.Type: GrantFiled: March 17, 2016Date of Patent: October 16, 2018Assignee: NGK Insulators, Ltd.Inventors: Chikashi Ihara, Takeshi Tokunaga, Kazuyuki Yamasawa
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Publication number: 20180257289Abstract: A temperature measurement method of a honeycomb formed body including: a temperature sensor attaching step of attaching a temperature sensor to the honeycomb formed body, an introducing step of mounting, on a shelf plate, the honeycomb formed body to which the temperature sensor is attached, and a temperature measurement device which receives a sensor signal from the temperature sensor to acquire temperature information of the formed body temperature, and introducing the shelf plate on which the honeycomb formed body and the temperature measurement device are mounted, from the inlet into the firing space, a temperature measuring step of acquiring the temperature information of an inner portion of the honeycomb formed body, by the temperature measurement device conveyed together with the honeycomb formed body, and a collecting step of collecting the temperature sensor and the temperature measurement device from a take-out port.Type: ApplicationFiled: February 22, 2018Publication date: September 13, 2018Applicant: NGK INSULATORS, LTD.Inventor: Takeshi TOKUNAGA
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Patent number: 9975779Abstract: A CVD-SiC formed body has low light transmittance and high resistivity, and may suitably be used as a member for an etcher that is used for a semiconductor production process, for example. The SiC formed body is formed using a CVD method, and includes 1 to 30 mass ppm of boron atoms, and more than 100 mass ppm and 1000 mass ppm or less of nitrogen atoms. The SiC formed body preferably has a resistivity of more than 10 ?·cm and 100,000 ?·cm or less, and a light transmittance at a wavelength of 950 nm of 0 to 1%.Type: GrantFiled: September 13, 2012Date of Patent: May 22, 2018Assignee: TOKAI CARBON CO., LTD.Inventors: Takaomi Sugihara, Masaaki Asakura, Takeshi Tokunaga, Tetsuya Sadaki
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Publication number: 20160282248Abstract: A detecting apparatus includes: a lifting mechanism section that is provided with a lifting portion for lifting honeycomb structures and a shelf plate; an actual load value measuring section that measures an actual load value; a total load value calculating section that adds up the plurality of measured actual load value; a total load value determining section that compares a standard total weight value of the honeycomb structures and the shelf plate to the total load value and determines whether to satisfy a total load value determining condition; an actual load value determining section that compares the actual load value to the specified load value and determines whether to satisfy an actual load value determining condition; and a shelf-plate crack determining section that determines that the shelf plate is cracked when the total load value determining condition or the actual load value determining condition is not satisfied.Type: ApplicationFiled: March 17, 2016Publication date: September 29, 2016Inventors: Chikashi IHARA, Takeshi TOKUNAGA, Kazuyuki YAMASAWA
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Publication number: 20150151975Abstract: A CVD-SiC formed body has low light transmittance and high resistivity, and may suitably be used as a member for an etcher that is used for a semiconductor production process, for example. The SiC formed body is formed using a CVD method, and includes 1 to 30 mass ppm of boron atoms, and more than 100 mass ppm and 1000 mass ppm or less of nitrogen atoms. The SiC formed body preferably has a resistivity of more than 10 ?·cm and 100,000 ?·cm or less, and a light transmittance at a wavelength of 950 nm of 0 to 1%.Type: ApplicationFiled: September 13, 2012Publication date: June 4, 2015Applicant: TOKAI CARBON CO., LTD.Inventors: Takaomi Sugihara, Masaaki Asakura, Takeshi Tokunaga, Tetsuya Sadaki
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Patent number: 8974723Abstract: A process for producing a honeycomb structure includes: a mixing step where forming raw materials including a ceramic raw material are mixed to obtain a forming blended material, a kneading step where the forming blended material is kneaded to obtain kneaded clay, a forming step where the kneaded clay is formed into a honeycomb shape to obtain a honeycomb formed article, and a firing step where the honeycomb formed article is fired to obtain a honeycomb structure. The ceramic raw material is a cordierite forming raw material, and a magnetic powder contained in the kneaded clay is at a ratio of 400 ppm or less with respect to solid content conversion mass of the whole kneaded clay. There is provided a honeycomb structure capable of improving trapping efficiency, in particular, initial trapping efficiency by reducing the number of coarse pores in the partition walls.Type: GrantFiled: February 9, 2009Date of Patent: March 10, 2015Assignee: NGK Insulators, Ltd.Inventors: Yasushi Noguchi, Takehiko Watanabe, Takeshi Tokunaga, Yukari Nakane
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Patent number: 8968638Abstract: The apparatus for injecting slurry contains the first member having the cavity therein; and the second member having a plurality of convex sections, each of the convex sections having the injection hole formed therein communicating with the cavity, wherein the protrusion length of the convex section is in a range from 3 to 5 mm, and the distance between centers of adjacent convex sections is in a range from 3 to 13 mm.Type: GrantFiled: October 7, 2009Date of Patent: March 3, 2015Assignee: NGK Insulators, Ltd.Inventor: Takeshi Tokunaga
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Publication number: 20140226779Abstract: According to an embodiment, a reactor pressure vessel depressurization system has: a main steam safety relief valve, a main steam safety relief valve driving gas pipe; a three-way solenoid valve having the first connection port; a driving gas feed pipe connected to the second connection port; and a containment vessel external connection pipe connected to the third connection port and extending to outside of the reactor containment vessel. The three-way solenoid valve is either in the first communication state where the first connection port communicates with the second connection port or in the second communication state where the first connection port communicates with the third communication port. The containment vessel external connection pipe has an open communication section open in normal operation and capable of being unopened, and an external gas receiving section capable of receiving second driving gas.Type: ApplicationFiled: February 4, 2014Publication date: August 14, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Ryohei SATO, Koji Nishino, Takeshi Tokunaga, Yasutaka Aoki, Takashi Sato
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Patent number: 8535587Abstract: A method for manufacturing a plugged honeycomb structure includes: a step of forming a columnar honeycomb formed body, and a plugging step of forming plugging portions in each of cells of the honeycomb formed body; wherein the plugging step has a plugging slurry injection operation where plugging slurry is injected into the cells by inserting the honeycomb formed body into a bottomed cylindrical inside container containing the plugging slurry and having a Young's modulus of 5 to 550 MPa and a tensile stress of 0.5 to 11 MPa and being disposed in a bottomed cylindrical outside container and by pressing one end portion against the bottom face of the inside container, and then the honeycomb formed body is pulled out from the inside container. There is provided a method for manufacturing a plugged honeycomb structure, the method being capable of inhibiting depression and protrusion of plugging portions.Type: GrantFiled: August 25, 2011Date of Patent: September 17, 2013Assignee: NGK Insulators, Ltd.Inventor: Takeshi Tokunaga
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Patent number: 8328974Abstract: The film sticking apparatus includes: a gripping member; a pressing member pressing the adhesive face of the film being held in a planar state against one end face of a cylindrical honeycomb structure having a plurality of cells, and thus sticking the film to the one end face; and a folding member having an opening portion formed that allows an end of the honeycomb structure on the side to which the film is stuck to be inserted, wherein the folding member folds a protruding portion of the film protruding from the one end face of the honeycomb structure by inserting the honeycomb structure into the opening portion, toward a side face of the honeycomb structure, and simultaneously presses at least a part of the folded protruding portion against a part of the side face of the honeycomb structure to stick the film to the side face.Type: GrantFiled: October 5, 2009Date of Patent: December 11, 2012Assignee: NGK Insulators, Ltd.Inventors: Takeshi Tokunaga, Koichi Miyashita
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Publication number: 20110304073Abstract: A method for manufacturing a plugged honeycomb structure includes: a step of forming a columnar honeycomb formed body, and a plugging step of forming plugging portions in each of cells of the honeycomb formed body; wherein the plugging step has a plugging slurry injection operation where plugging slurry is injected into the cells by inserting the honeycomb formed body into a bottomed cylindrical inside container containing the plugging slurry and having a Young's modulus of 5 to 550 MPa and a tensile stress of 0.5 to 11 MPa and being disposed in a bottomed cylindrical outside container and by pressing one end portion against the bottom face of the inside container, and then the honeycomb formed body is pulled out from the inside container. There is provided a method for manufacturing a plugged honeycomb structure, the method being capable of inhibiting depression and protrusion of plugging portions.Type: ApplicationFiled: August 25, 2011Publication date: December 15, 2011Applicant: NGK Insulators, Ltd.Inventor: Takeshi TOKUNAGA