Patents by Inventor Takeshi Imamura
Takeshi Imamura 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: 20250046759Abstract: A semiconductor device includes: a semiconductor layer; first and second vertical MOS transistors provided in the semiconductor layer; a metal layer in contact with and connected to an entire back face of the semiconductor layer; and a support bonded to the back face side of the metal layer via a conductive adhesive. In a plan view, the support is larger in area than the semiconductor layer and encompasses the semiconductor layer. A thickness of the support is greater than a thickness of the semiconductor layer. In a cross-sectional view of the semiconductor device including a center of the semiconductor layer and an outer periphery of the semiconductor layer in the plan view, a semiconductor chip resulting from excluding the support and the conductive adhesive from the semiconductor device is in a curved shape projecting in a direction away from the support.Type: ApplicationFiled: October 22, 2024Publication date: February 6, 2025Inventors: Takeshi IMAMURA, Masaaki HIRAKO, Takashi OHASHI
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Publication number: 20250046758Abstract: A semiconductor device includes: a semiconductor layer; first and second vertical MOS transistors provided in the semiconductor layer; a metal layer connected to and in contact with an entire surface on a back face side of the semiconductor layer; and a support bonded to a back face side of the metal layer via an adhesive. In a plan view, the support is larger in area than the semiconductor layer and encompasses the semiconductor layer. A thickness of the support is greater than a thickness of the semiconductor layer. In a cross-sectional view, a height of the adhesive along a lateral face of the semiconductor layer does not reach a top face of the semiconductor layer. In the cross-sectional view, a semiconductor chip resulting from excluding the support and the adhesive from the semiconductor device is in a curved shape that projects in a direction toward the support.Type: ApplicationFiled: October 22, 2024Publication date: February 6, 2025Inventors: Takashi OHASHI, Takeshi IMAMURA, Hiroto KATSUDA
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Patent number: 12208672Abstract: A work machine includes: a partition member provided with an intake port and an exhaust port and forming an engine room; an engine disposed in the engine room; a cooling fan disposed on an intake port side of the engine in the engine room; an exhaust pipe discharging exhaust gas from the engine; and an exhaust duct disposed in the engine room and having an inflow port into which air from the cooling fan flows, and an outflow port. At least a portion of the exhaust duct is disposed above the engine and has a facing surface facing the engine and a through-hole provided in the facing surface. At least a portion of the exhaust pipe is disposed in the through-hole. A gap is formed between an outer surface of the exhaust pipe and an inner surface of the through-hole.Type: GrantFiled: October 29, 2020Date of Patent: January 28, 2025Assignee: KOMATSU LTD.Inventors: Masahiro Ikeda, Kazuya Imamura, Takaaki Mizokami, Naotsuna Matsuda, Takeshi Nakagawa, Naoya Ando
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Patent number: 12206401Abstract: A semiconductor device includes a power switching element and a drive device to drive the power switching element. The drive device includes a voltage source, a switching element, a capacitor connected in parallel to the voltage source with the switching element being interposed, a switching element provided between the capacitor and a gate terminal of the power switching element, a first comparison device to output a result of comparison between a voltage of the capacitor and a reference value VQR, a second comparison device to output a result of comparison between a gate voltage of the power switching element and a reference value VR, and a short-circuit determination unit that makes determination as to a short circuit of the power switching element based on an output signal from the first comparison device and an output signal from the second comparison device.Type: GrantFiled: September 7, 2020Date of Patent: January 21, 2025Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yohei Mitsui, Yasutaka Imamura, Takeshi Horiguchi, Yasushige Mukunoki
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Publication number: 20240368717Abstract: The present disclosure is to reduce the number of surface defects in a grain-oriented electrical steel sheet. When manufacturing a grain-oriented electrical steel sheet, a steel slab is heated before being subjected to hot rolling. The heating includes a first heating process of heating the steel slab to a temperature of lower than 1300° C., and a second heating process of heating the steel slab to a temperature of 1300° C. or higher, where the time from the end of the first heating process to the start of the second heating process is 20 seconds or longer, the oxygen concentration in the atmosphere in the second heating process is 1.0 vol % or less, and the surface of the steel slab is subjected to water cooling at a cooling rate of 3.0° C./s or higher after the second heating process and before the hot rolling.Type: ApplicationFiled: May 27, 2022Publication date: November 7, 2024Applicant: JFE STEEL CORPORATIONInventors: Takeshi IMAMURA, Masanori TAKENAKA, Eitaro SHIDARA
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Publication number: 20240282491Abstract: A method for producing a grain-oriented electrical steel sheet includes: heating a steel slab containing a specific composition; subsequently performing hot rolling; performing hot-band annealing as necessary; performing cold rolling either once or two or more times with intermediate annealing between each rolling to obtain a cold-rolled sheet having a final sheet thickness; performing primary recrystallization annealing which also serves as decarburization annealing; and performing finishing annealing. In the method for producing a grain-oriented electrical steel sheet, the heating temperature for the slab is 1300° C. or higher. In the rough rolling of the hot rolling, one of rolling passes is performed in the temperature range of 1200° C. or higher, and subsequently, a next rolling pass is performed in an opposite direction after a time interval of 5 seconds or longer, with a total rolling reduction of the rough rolling achieved 75% or higher.Type: ApplicationFiled: May 27, 2022Publication date: August 22, 2024Applicant: JFE Steel CorporationInventors: Masanori Takenaka, Takeshi Imamura, Mari Takahashi, Noriki Fujita
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Publication number: 20240271254Abstract: A method for producing a grain-oriented electrical steel sheet includes steps of heating a steel slab having a specified ingredient composition to a temperature of 1300 or lower; subjecting the slab to hot rolling and then one cold rolling or two or more cold rolling with intermediate annealing between each rolling to obtain a cold-rolled sheet with a final sheet thickness; performing primary recrystallization annealing which also serves as decarburization annealing; applying an annealing separator; and subjecting the steel sheet to finishing annealing. In this method, after soaking in the annealing step preceding the cold rolling for achieving the final sheet thickness, the steel sheet is cooled from 800 to 400° C. at an average cooling rate of 15° C./s or more and subsequently subjected to low-temperature heat treatment comprising holding the sheet at a temperature in a range of 60 to 100° C. for 30 to 600 seconds.Type: ApplicationFiled: May 26, 2022Publication date: August 15, 2024Applicant: JFE Steel CorporationInventors: Masanori Takenaka, Takeshi Imamura, Takaaki Tanaka, Yukihiro Matsubara
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Publication number: 20240263285Abstract: Provided is a method of manufacturing a grain-oriented electrical steel sheet having an excellent film adhesion can be obtained. The method of manufacturing a grain-oriented electrical steel sheet includes subjecting a steel slab to hot rolling to obtain a hot-rolled steel sheet, subjecting the hot-rolled steel sheet to cold rolling once to obtain a cold-rolled steel sheet, subjecting the cold-rolled steel sheet to pickling, subjecting the cold-rolled steel sheet to decarburization annealing, applying an annealing separator to a surface of the cold-rolled steel sheet after the decarburization annealing, and subjecting the cold-rolled steel sheet to final annealing, where in the pickling, a solution with an acid concentration of 1.0 mass % to 20 mass % and an Fe ion concentration of 2 mass % to 15 mass % is used, and in the decarburization annealing, a concentration of CO in an atmosphere gas is maintained at 6 vol % or less.Type: ApplicationFiled: May 27, 2022Publication date: August 8, 2024Applicant: JFE STEEL CORPORATIONInventors: Takeshi IMAMURA, Masanori TAKENAKA, Takafumi SUZUKI
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Publication number: 20240254601Abstract: Disclosed is a method for producing a grain-oriented electrical steel sheet, including subjecting a steel material containing, by mass %, Si: 2.0-5.0%, Mn: 0.01-0.50%, and one or both of S and Se: 0.001-0.100% in total, to hot rolling, followed by cold rolling once, or twice or more with intermediate annealing in between, followed by decarburization annealing, followed by application and drying of an annealing separator mainly composed of MgO, followed by final annealing, followed by flattening annealing, in which the final annealing is performed in a predetermined atmosphere, the flattening annealing is accompanied by coating treatment including application of a coating solution, and prior to the application of the coating solution, pickling treatment is performed using an acid with a predetermined concentration at a temperature of 15° C. or higher for 1 second or more and 60 seconds or less.Type: ApplicationFiled: May 27, 2022Publication date: August 1, 2024Applicant: JFE STEEL CORPORATIONInventors: Takeshi IMAMURA, Ayaka YOSHIKAWA, Masanori TAKENAKA, Kazuaki TAMURA
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Publication number: 20240247347Abstract: In the production of a grain-oriented electrical steel sheet by heating a steel slab containing, in mass %, C: 0.02 to 0.10%, Si: 2.5 to 5.5%, Mn: 0.01 to 0.30%, S: 0.0010 to 0.040%, Se: 0 to 0.040%, sol. Al: 0.010 to 0.040%; and N: 0.004 to 0.020% to 1300° C. or higher; subsequently performing hot rolling, hot-band annealing as necessary, cold rolling, and primary recrystallization annealing which also serves as decarburization annealing; applying an annealing separator on the surface of the steel sheet; and performing finishing annealing, edge cracks that may occur in the hot rolling are effectively prevented by keeping a slab lateral face temperature at a time of starting rough rolling during the hot rolling equal to or lower than a temperature Te defined by the following Expression Te=?120000 [% S]2+1400 (1) and carrying out width reduction after at least one pass in the rough rolling.Type: ApplicationFiled: May 26, 2022Publication date: July 25, 2024Applicant: JFE Steel CorporationInventors: Masanori Takenaka, Takeshi Imamura, Takaaki Tanaka, Hiroi Yamaguchi
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Publication number: 20240249863Abstract: To provide a grain-oriented electrical steel sheet with good processing accuracy in rounding while maintaining excellent magnetic properties, and a producing method thereof. Disclosed is the method including: subjecting a steel material to heating to 1300° C. or higher and hot rolling, subjecting the resulting sheet directly, or after subjection to hot-rolled sheet annealing, to at least two cycles of cold rolling with intermediate annealing therebetween, decarburization annealing, application of an annealing separator to a surface of the sheet, final annealing, in which maximum arrival temperatures in the first and second cycles of the cold rolling satisfy a predetermined relation, total rolling reductions in the first and second cycles of the cold rolling satisfy a predetermined relation, and in the final annealing, an average heating rates in temperature ranges from 50° C. to 1000° C. and from 1000° C. to (maximum arrival temperature—50° C.) satisfy a predetermined relation.Type: ApplicationFiled: May 27, 2022Publication date: July 25, 2024Applicant: JFE STEEL CORPORATIONInventors: Takeshi IMAMURA, Yukihiro SHINGAKI, Masanori TAKENAKA, Takashi TERASHIMA
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Publication number: 20240240293Abstract: To provide a method for producing a grain-oriented electrical steel sheet that can solve the problem of cracking in steel sheets during final cold rolling and that can stably produce a grain-oriented electrical steel sheet with low iron loss. A production method includes predetermined steps, wherein the conditions: T??4000×A+440, and T?360 are satisfied, where A denotes an average C content in mass % in a predetermined region of the steel sheet after subjection to annealing preceding final cold rolling and before subjection to the final cold rolling, and T denotes a time in hours from just after the completion of the annealing preceding the final cold rolling to just before the start of the final cold rolling, and after the final cold rolling and before the decarburization annealing, pickling treatment is performed with a predetermined treatment solution.Type: ApplicationFiled: May 27, 2022Publication date: July 18, 2024Applicant: JFE STEEL CORPORATIONInventors: Takeshi IMAMURA, Ayaka YOSHIKAWA, Masanori TAKENAKA, Hiroi YAMAGUCHI
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Publication number: 20240218242Abstract: The present invention aims at providing a compound that can be suitably used as a fluorescent dye or the like, a novel fluorescent dye and kit for easily detecting cells, a novel method for easily detecting cells or the like, and so on. A compound represented by the following formula (1) or a salt thereof: in the formula (1), R1 is a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms or the like; R2 and R3 are each independently a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms or the like; R4 and R5 are each independently an alkyl group having 1 to 12 carbon atoms or the like; n is an integer of 1 to 4; and a and b are each independently an integer of 0 to 4.Type: ApplicationFiled: March 2, 2022Publication date: July 4, 2024Inventors: Yosuke NIKO, Kazuki INOUE, Taku NAKAYAMA, Shingo HADANO, Shigeru WATANABE, Masamoto MURAKAMI, Ryosuke KAWAKAMI, Teruko TSUDA, Koji SAYAMA, Takeshi IMAMURA
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Patent number: 12027318Abstract: A capacitor includes a bus bar. The bus bar includes a bus bar body member and a terminal formation member configured to be superposed on and fixed to a terminal formation part of the bus bar body member. In the terminal formation part, a plurality of first connection terminal parts are formed so as to be arranged in one direction, by portions of the terminal formation part being cut and raised. In the terminal formation member, a plurality of second connection terminal parts are formed so as to be arranged in one direction, by portions of the terminal formation member being cut and raised, and second openings are formed in places where the portions have been cut and raised. The first connection terminal parts and the second connection terminal parts are alternately arranged in one direction, by the first connection terminal parts being passed through the second openings.Type: GrantFiled: March 15, 2022Date of Patent: July 2, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshiki Kamimura, Takeshi Imamura, Akihiro Morikawa, Wataru Tamura
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Publication number: 20240183011Abstract: A method for producing a grain-oriented electrical steel sheet comprises heating a steel material containing a certain composition to a temperature in a range of 1150 to 1250° C.; performing hot rolling, hot-band annealing, and cold rolling on the material to obtain a cold-rolled sheet with a final thickness; performing decarburization annealing also serving as primary recrystallization annealing on the cold-rolled sheet; subsequently applying an annealing separator to a surface of the steel sheet; and performing finishing annealing followed by applying an insulation coating. In the method, rapid heating is conducted from 500 and 700° C. in a heating process of the decarburization annealing at a rate of 100 to 1000° C./s while gradual heating is conducted from 800 to 900° C. in a heating process of the finishing annealing at a heating rate of 0.5 to 4.0° C./hr for at least 10 hours.Type: ApplicationFiled: March 28, 2022Publication date: June 6, 2024Applicant: JFE Steel CorporationInventors: Ryosuke Tani, Takeshi Imamura, Shigehiro Takajo, Hiroi Yamaguchi
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Publication number: 20240150875Abstract: Proposed is a method for producing a grain-oriented electrical steel sheet that comprises heating a steel material containing a certain composition and inhibitor-forming ingredients to a temperature in a range of 1300 to 1400° C.; performing hot rolling, hot-band annealing, and cold rolling on the material to obtain a cold-rolled sheet; performing decarburization annealing also serving as primary recrystallization annealing on the cold-rolled sheet; subsequently applying an annealing separator to a surface of the steel sheet; and performing finishing annealing followed by applying an insulation coating. In the method, rapid heating is conducted from 500 and 700° C. in a heating process of the decarburization annealing at a rate of 100 to 1000° C./s while gradual heating is conducted from 860 to 970° C. in a heating process of the finishing annealing at a heating rate of 0.5 to 4.0° C./hr for at least 10 hours.Type: ApplicationFiled: March 28, 2022Publication date: May 9, 2024Applicant: JFE Steel CorporationInventors: Ryosuke Tani, Takeshi Imamura, Shigehiro Takajo, Hiroi Yamaguchi
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Patent number: 11959149Abstract: Provided are a grain-oriented electrical steel sheet having excellent iron loss property without using magnetic domain refining treatment and an iron core produced using the same. The steel sheet comprises: a predetermined chemical composition; and a steel microstructure in which: crystal grains are made up of coarse secondary recrystallized grains of 5.0 mm or more, fine grains of more than 2.0 mm and less than 5.0 mm contained at a frequency of 0.2 to 5 grains per cm2, and very fine grains of 2.0 mm or less; for each coarse secondary recrystallized grain extending through the sheet in a thickness direction, an area ratio of a region in which projected surfaces of exposed areas of the coarse secondary recrystallized grain on a front side and a back side of the sheet coincide with each other to each of the exposed areas is 95% or more.Type: GrantFiled: January 30, 2020Date of Patent: April 16, 2024Assignee: JFE STEEL CORPORATIONInventors: Takeshi Imamura, Makoto Watanabe
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Publication number: 20240105369Abstract: In a production of a grain-oriented electrical steel sheet comprising hot rolling a raw steel material, cold rolling, decarburization annealing, applying an annealing separator composed mainly of MgO, finish annealing and magnetic domain subdividing, the annealing separator including certain compounds, and the finish annealing conducted by holding the steel sheet at a temperature of 800 to 950° C. for 10 to 100 hours and passing a dry gas containing not less than 1 vol % of H2 and having a dew point of not higher than 10° C. to reach a furnace pressure of not less than 3.5 mmH2O from not lower than 1050° C. to a purification treatment temperature, so that a pickling weight loss of undercoat film by pickling with HCl is not more than 1.8 g/m2 and the total concentration of Sn, Sb, Mo, and W on a boundary face between the film and iron matrix is 0.01 to 0.15 mass %.Type: ApplicationFiled: October 27, 2020Publication date: March 28, 2024Applicant: JFE Steel CorporationInventors: Makoto Watanabe, Masahiro Suemune, Takeshi Imamura
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Publication number: 20240053346Abstract: The present invention relates to providing a novel method for easily detecting tumor cells in a tissue derived from an organism. The present invention includes a fluorescent dye for detecting tumor cells in a tissue, including a compound that exhibits solvatochromism. The present invention also includes a method for detecting tumor cells or specifying a tumor removal area, including applying the fluorescent dye to staining of a tissue derived from an organism and to an organism.Type: ApplicationFiled: September 6, 2021Publication date: February 15, 2024Inventors: Masamoto MURAKAMI, Ryosuke KAWAKAMI, Teruko TSUDA, Koji SAYAMA, Takeshi IMAMURA, Yosuke NIKO, Kazuki INOUE, Taku NAKAYAMA, Shingo HADANO, Shigeru WATANABE
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Publication number: 20230307160Abstract: Provided is a method for manufacturing a grain-oriented electrical steel sheet to reduce iron loss by controlling the magnetic domain structure, in which the iron loss reduction effect can be maintained even when stress relief annealing is applied, and the magnetic flux density does not decrease after the magnetic domain control treatment. In the manufacturing method, on a surface of the grain oriented electrical steel sheet, a laser beam with a ring-shaped intensity distribution in which the intensity in a periphery is lower than that in a center is irradiated in a linear manner in a direction intersecting a rolling direction of the steel sheet.Type: ApplicationFiled: August 26, 2021Publication date: September 28, 2023Applicant: JFE STEEL CORPORATIONInventors: Hiroi YAMAGUCHI, Takeshi IMAMURA, Takeshi OMURA, Yoshihisa ICHIHARA