Patents by Inventor Shunji Matsumoto
Shunji Matsumoto 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: 10920304Abstract: A cemented carbide comprising 55-90 parts by mass of WC particles, and 10-45 parts by mass of an Fe-based binder phase, the binder phase having a composition comprising 2.5-10% by mass of Ni, 0.2-1.2% by mass of C, 0.5-5% by mass of Cr, 0.2-2.0% by mass of Si, 0.1-3% by mass of W, 0-5% by mass of Co, and 0-1% by mass of Mn, the balance being substantially Fe and inevitable impurities, and the cemented carbide being substantially free from composite carbides having major axes of 5 ?m or more. This cemented carbide is produced by cooling at a cooling rate of 60° C./hour or more between 900° C. and 600° C., after vacuum sintering.Type: GrantFiled: August 1, 2017Date of Patent: February 16, 2021Assignee: HITACHI METALS, LTD.Inventors: Takumi Ohata, Shunji Matsumoto
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Publication number: 20190194783Abstract: A cemented carbide comprising 55-90 parts by mass of WC particles, and 10-45 parts by mass of an Fe-based binder phase, the binder phase having a composition comprising 2.5-10% by mass of Ni, 0.2-1.2% by mass of C, 0.5-5% by mass of Cr, 0.2-2.0% by mass of Si, 0.1-3% by mass of W, 0-5% by mass of Co, and 0-1% by mass of Mn, the balance being substantially Fe and inevitable impurities, and the cemented carbide being substantially free from composite carbides having major axes of 5 ?m or more. This cemented carbide is produced by cooling at a cooling rate of 60° C./hour or more between 900° C. and 600° C., after vacuum sintering.Type: ApplicationFiled: August 1, 2017Publication date: June 27, 2019Applicant: HITACHI METALS, LTD.Inventors: Takumi OHATA, Shunji MATSUMOTO
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Publication number: 20180033613Abstract: This filling method includes a step of depressurizing a processing chamber, a step of bringing a filling material into contact with a surface of a wafer, a step of filling by differential pressure fine spaces of the wafer with the filling material by applying a pressure onto an entire surface of the filling material on a side opposite to the wafer, and a step of baking the filling material throughout the wafer.Type: ApplicationFiled: January 27, 2016Publication date: February 1, 2018Inventor: Shunji MATSUMOTO
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Patent number: 9605682Abstract: There is provided a blower fan including a motor. In its bearing apparatus, the inner circumferential surface of the rotor cylindrical portion 222b and the outer circumferential surface of the bearing portion are arranged to together define a seal gap 35. The bushing 26 includes a bushing base portion 260 and a bushing cylindrical portion 262. The inner circumferential surface of the bushing cylindrical portion 262 and the outer circumferential surface of the rotor cylindrical portion 222b are arranged to together define a vertical gap. The vertical gap is arranged to have a minimum radial width equal to or smaller than a maximum width of the seal gap. A lower end portion of the rotor raised portion 514 and an upper end portion of the bushing cylindrical portion 262 are arranged to together define a second horizontal gap 266a.Type: GrantFiled: October 20, 2015Date of Patent: March 28, 2017Assignee: NIDEC CORPORATIONInventors: Tomohiro Hasegawa, Shunji Matsumoto, Takahiro Kikuichi, Mitsuhito Nishio, Noriaki Yamada, Satoru Otsu, Hiroyoshi Teshima, Kiyoto Ida
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Patent number: 9458852Abstract: A centrifugal fan includes an impeller, a motor portion, and a housing. The housing includes an upper plate portion, a lower plate portion arranged to have the motor portion fixed thereto; and a side wall portion. A flow control member is arranged to extend in a line along a boundary between an inside surface of the side wall portion and one of a lower surface of the upper plate portion and an upper surface of the lower plate portion. The flow control member includes a flow control surface arranged to extend radially outward from the one of the lower surface of the upper plate portion and the upper surface of the lower plate portion to the inside surface of the side wall portion while becoming more distant from the one of the lower surface of the upper plate portion and the upper surface of the lower plate portion.Type: GrantFiled: March 11, 2013Date of Patent: October 4, 2016Assignee: NIDEC CORPORATIONInventors: Seung-sin Yoo, Tomohiro Hasegawa, Shunji Matsumoto, Kazuo Tanaka, Takuro Kawano, Yuji Katsurayama, Atsushi Mukai, Noriaki Yamamoto
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Patent number: 9341189Abstract: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion rotatably supported by the stationary portion. The stationary portion includes a stator and a bearing portion arranged inside of the stator. The rotating portion includes a rotor magnet arranged radially outside the stator; a shaft inserted in the bearing portion, and having an upper portion fixed to the impeller directly or through one or more members; and a thrust portion arranged axially opposite the bearing portion, and including an annular surface arranged around the shaft.Type: GrantFiled: June 14, 2012Date of Patent: May 17, 2016Assignee: NIDEC CORPORATIONInventors: Teiichi Hirono, Shinichiro Noda, Yoshiharu Ikegami, Tomohiro Hasegawa, Tomohiro Yoneda, Shunji Matsumoto, Seungsin Yoo, Kouta Kabune
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Publication number: 20160032929Abstract: The second holder member includes a cover portion including, in an inner edge portion thereof, a cover portion cylindrical portion arranged to extend downward; the rotor cylindrical portion includes an annular rotor raised portion arranged to project radially outward from an outer circumferential surface thereof; the second holder member is attached to the first holder member; and a lower end portion of the cover portion cylindrical portion is arranged to be in axial contact with the rotor raised portion.Type: ApplicationFiled: October 20, 2015Publication date: February 4, 2016Applicant: NIDEC CORPORATIONInventors: Tomohiro Hasegawa, Shunji Matsumoto, Takahiro Kikuichi, Mitsuhito Nishio, Noriaki Yamada, Satoru Otsu, Hiroyoshi Teshima, Kiyoto Ida
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Publication number: 20160004844Abstract: A non-transitory, computer-readable recording medium storing therein a compound design program causing a computer to execute a process that includes disposing a virtual single atom at a position that does not collide with a protein, a fragment, or a virtual single atom disposed on a simulation space; forming a bond when an interatomic distance and an angle formed by the disposed virtual single atom with an atom in the fragment or another virtual single atom are within predetermined ranges for bond length and bond angle; and executing a cyclization process when a set of three contiguous atoms including a virtual single atom forming a bond satisfies a cyclization condition under which a chemically proper ring may be formed when a virtual single atom is added to the three atoms.Type: ApplicationFiled: September 11, 2015Publication date: January 7, 2016Inventors: Shunji MATSUMOTO, Atsushi Tomonaga, Nozomu KAMIYA, Hajime Sugiyama
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Patent number: 9051938Abstract: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion rotatably supported by the stationary portion. The stationary portion includes a stator and a bearing portion arranged inside of the stator. The rotating portion includes a rotor magnet arranged radially outside the stator; a shaft inserted in the bearing portion, and having an upper portion fixed to the impeller directly or through one or more members; and a thrust portion arranged axially opposite the bearing portion, and including an annular surface arranged around the shaft.Type: GrantFiled: July 2, 2012Date of Patent: June 9, 2015Assignee: NIDEC CORPORATIONInventors: Teiichi Hirono, Shinichiro Noda, Yoshiharu Ikegami, Tomohiro Hasegawa, Tomohiro Yoneda, Shunji Matsumoto, Seungsin Yoo, Kouta Kabune, Kiyoto Ida, Naoki Matsuba, Tatsuya Akase, Takehito Tamaoka, Kazuhiko Fukushima
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Publication number: 20140072423Abstract: A centrifugal fan includes an impeller, a motor portion, and a housing. The housing includes an upper plate portion, a lower plate portion arranged to have the motor portion fixed thereto; and a side wall portion. A flow control member is arranged to extend in a line along a boundary between an inside surface of the side wall portion and one of a lower surface of the upper plate portion and an upper surface of the lower plate portion. The flow control member includes a flow control surface arranged to extend radially outward from the one of the lower surface of the upper plate portion and the upper surface of the lower plate portion to the inside surface of the side wall portion while becoming more distant from the one of the lower surface of the upper plate portion and the upper surface of the lower plate portion.Type: ApplicationFiled: March 11, 2013Publication date: March 13, 2014Applicant: NIDEC CORPORATIONInventors: Seung-sin Yoo, Tomohiro Hasegawa, Shunji Matsumoto, Kazuo Tanaka, Takuro Kawano, Yuji Katsurayama, Atsushi Mukai, Noriaki Yamamoto
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Publication number: 20130004351Abstract: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion rotatably supported by the stationary portion. The stationary portion includes a stator and a bearing portion arranged inside of the stator. The rotating portion includes a rotor magnet arranged radially outside the stator; a shaft inserted in the bearing portion, and having an upper portion fixed to the impeller directly or through one or more members; and a thrust portion arranged axially opposite the bearing portion, and including an annular surface arranged around the shaft.Type: ApplicationFiled: June 14, 2012Publication date: January 3, 2013Applicant: NIDEC CORPORATIONInventors: Teiichi Hirono, Shinichiro Noda, Yoshiharu Ikegami, Tomohiro Hasegawa, Tomohiro Yoneda, Shunji Matsumoto, Seungsin Yoo, Kouta Kabune
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Publication number: 20130004350Abstract: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion rotatably supported by the stationary portion. The stationary portion includes a stator and a bearing portion arranged inside of the stator. The rotating portion includes a rotor magnet arranged radially outside the stator; a shaft inserted in the bearing portion, and having an upper portion fixed to the impeller directly or through one or more members; and a thrust portion arranged axially opposite the bearing portion, and including an annular surface arranged around the shaft.Type: ApplicationFiled: July 2, 2012Publication date: January 3, 2013Applicant: NIDEC CORPORATIONInventors: Teiichi Hirono, Shinichiro Noda, Yoshiharu Ikegami, Tomohiro Hasegawa, Tomohiro Yoneda, Shunji Matsumoto, Seungsin Yoo, Kouta Kabune, Kiyoto Ida, Naoki Matsuba, Tatsuya Akase, Takehito Tamaoka, Kazuhiko Fukushima
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Publication number: 20130004114Abstract: A seal cover includes an axially opposing portion arranged to extend radially outward from a outer circumferential surface of a bearing portion, and arranged axially opposite a lower end portion of a rotor cylindrical portion; and a radially opposing portion arranged to extend upward continuously from a axially opposing portion, and arranged opposite to an outer circumferential surface of a rotor cylindrical portion to define a vertical gap together with a rotor cylindrical portion.Type: ApplicationFiled: May 29, 2012Publication date: January 3, 2013Applicant: NIDEC CORPORATIONInventors: Tomohiro HASEGAWA, Shunji MATSUMOTO, Takahiro KIKUICHI, Mitsuhito NISHIO, Noriaki YAMADA, Satoru OTSU, Hiroyoshi TESHIMA, Kiyoto IDA
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Patent number: 8308622Abstract: A centrifugally cast composite roll comprising an outer layer having a composition comprising by mass 2.5-9% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 11-40% of V, the balance being Fe and inevitable impurities; an intermediate layer made of a high-speed steel alloy, which is formed inside the outer layer; and an inner layer made of cast iron or steel, which is formed inside the intermediate layer.Type: GrantFiled: March 13, 2006Date of Patent: November 13, 2012Assignee: Hitachi Metals, Ltd.Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida, Seiji Oyama, Takuya Osue
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Patent number: 8156651Abstract: A method for producing an outer layer for a roll having a structure having MC carbide dispersed at an area ratio of 20-60%, comprising the steps of (1) centrifugally casting a melt having a composition comprising, by mass, 2.2-6.0% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 8-22% of V, the balance being Fe and inevitable impurity elements, to produce a cylindrical body comprising an inner layer having concentration MC carbide, an MC-carbide-poor outer layer, and a concentration gradient layer between the inner layer and the outer layer, in which the area ratio of MC carbide changes, and (2) cutting the cylindrical body to a depth at which the area ratio of MC carbide is 20% or more.Type: GrantFiled: September 13, 2005Date of Patent: April 17, 2012Assignee: Hitachi Metals, Ltd.Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida
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Publication number: 20090092852Abstract: A centrifugally cast composite roll comprising an outer layer having a composition comprising by mass 2.5-9% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 11-40% of V, the balance being Fe and inevitable impurities; an intermediate layer made of a high-speed steel alloy, which is formed inside the outer layer; and an inner layer made of cast iron or steel, which is formed inside the intermediate layer.Type: ApplicationFiled: March 13, 2006Publication date: April 9, 2009Applicant: Hitachi Metals, Ltd.Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida, Seiji Oyama, Takuya Osue
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Publication number: 20080226936Abstract: A method for producing an outer layer for a roll having a structure having MC carbide dispersed at an area ratio of 20-60%, comprising the steps of (1) centrifugally casting a melt having a composition comprising, by mass, 2.2-6.0% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 8-22% of V, the balance being Fe and inevitable impurity elements, to produce a cylindrical body comprising an inner layer having concentration MC carbide, an MC-carbide-poor outer layer, and a concentration gradient layer between the inner layer and the outer layer, in which the area ratio of MC carbide changes, and (2) cutting the cylindrical body to a depth at which the area ratio of MC carbide is 20% or more.Type: ApplicationFiled: September 13, 2002Publication date: September 18, 2008Applicant: Hitachi Metals, Ltd.Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida
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Patent number: 7181959Abstract: A fatigue failure diagnostic method of a turbocharger in accordance with the present invention is a method for diagnosing the fatigue failure of a turbocharger (5), comprising the steps of measuring the revolution speed of the turbocharger (5), computing an accumulated fatigue value (Ft) based on the measured revolution speed, and executing the fatigue failure judgment of the turbocharger (5) by comparing the computed accumulated fatigue value (Ft) and the prescribed fatigue limit value (F1).Type: GrantFiled: June 2, 2005Date of Patent: February 27, 2007Assignee: Isuzu Motors LimitedInventors: Shunji Matsumoto, Mitsuhiro Sonohara
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Publication number: 20050274112Abstract: A fatigue failure diagnostic method of a turbocharger in accordance with the present invention is a method for diagnosing the fatigue failure of a turbocharger (5), comprising the steps of measuring the revolution speed of the turbocharger (5), computing an accumulated fatigue value (Ft) based on the measured revolution speed, and executing the fatigue failure judgment of the turbocharger (5) by comparing the computed accumulated fatigue value (Ft) and the prescribed fatigue limit value (F1).Type: ApplicationFiled: June 2, 2005Publication date: December 15, 2005Applicant: Isuzu Motors LimitedInventors: Shunji Matsumoto, Mitsuhiro Sonohara
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Publication number: 20040222323Abstract: A nozzle device forms a treatment film with a uniform thickness on a substrate with a small amount of treatment liquid and a substrate treatment device. A nozzle device 10 includes a plurality of discharge ports 18 formed on the bottom, a liquid retaining chamber 22 for retaining supplied treatment liquid, and a liquid discharge paths 23 and 17 that communicate with each discharge port 18 on one end and communicate with the retaining chamber 22 on the other end. The paths allow the treatment liquid retained in the liquid retaining chamber 22 to flow to the discharge ports 18 where the liquid is discharged. The discharge ports 18 are arranged in double rows along a longitudinal direction of the nozzle device 10. The discharge ports of one row is staggered with respect to the discharge ports of the other row so that the discharge ports 18 form a staggered pattern in the arranged direction.Type: ApplicationFiled: June 3, 2004Publication date: November 11, 2004Applicant: Sumitomo Precision Products Co., Ltd.Inventors: Takeshi Akasaka, Shigeru Mizukawa, Takashi Murata, Katsutoshi Nakata, Shunji Matsumoto