Patents by Inventor Koichi Nakashima
Koichi Nakashima 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: 11959157Abstract: Provided is a high-Mn steel having excellent low-temperature toughness and excellent surface characteristics. A high-Mn steel comprises: a chemical composition containing, in mass %, C: 0.100 to 0.700%, Si: 0.05 to 1.00%, Mn: 20.0 to 35.0%, P: ?0.030%, S: ?0.0070%, Al: 0.010 to 0.070%, Cr: 0.50 to 5.00%, N: 0.0050 to 0.0500%, O: ?0.0050%, Ti: ?0.005%, and Nb: ?0.005%, with a balance consisting of Fe and inevitable impurities; and a microstructure having austenite as a matrix, wherein in the microstructure, a Mn concentration of a Mn-concentrated portion is 38.0% or less, and an average KAM value is 0.3 or more, yield stress is 400 MPa or more, absorbed energy vE?196 in a Charpy impact test at ?196° C. is 100 J or more, and percent brittle fracture is less than 10%.Type: GrantFiled: July 31, 2019Date of Patent: April 16, 2024Assignee: JFE STEEL CORPORATIONInventors: Daichi Izumi, Shigeki Kitsuya, Keiji Ueda, Koichi Nakashima
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Publication number: 20240092962Abstract: A resin composition contains a preliminary reaction product (A) obtained by previously reacting a polyphenylene ether compound (a1) having a hydroxyl group in a molecule and an acid anhydride (a2) having an acid anhydride group in a molecule, and a curable resin (B) containing a reactive compound having an unsaturated double bond in a molecule, in which an equivalent ratio of the acid anhydride group in the acid anhydride (a2) to the hydroxyl group in the polyphenylene ether compound (a1) is 1.5 or less, and a content of the curable resin (B) is 20 to 85 parts by mass with respect to 100 parts by mass of a sum of the preliminary reaction product (A) and the curable resin (B).Type: ApplicationFiled: March 24, 2022Publication date: March 21, 2024Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Taichi NAKASHIMA, Hiroyuki FUJISAWA, Akira OTSUKA, Koichi ISAJI, Hajime OGUSHI
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Publication number: 20230411055Abstract: Provided is a technique that can achieve both magnetic properties and machinability by cutting at a high level, which has been impossible with only the conventional techniques of improving the machinability by cutting using MnS or the like. A soft magnetic iron comprises a chemical composition containing, in mass %, C: less than 0.02%, Si: less than 0.05%, Mn: more than 0.03% and 0.50% or less, P: 0.002% or more and less than 0.006%, S: 0.013 % or more and 0.050% or less, Al: 0.010% or less, N: 0.0010% or more and 0.0100% or less, and B: 0.0003% or more and 0.0065% or less, with a balance consisting of iron and inevitable impurities.Type: ApplicationFiled: October 22, 2021Publication date: December 21, 2023Applicant: JFE STEEL CORPORATIONInventors: Katsuyuki ICHIMIYA, Koichi NAKASHIMA, Yuta IMANAMI
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Publication number: 20230374637Abstract: Provided is a technique that can achieve both magnetic properties and machinability by cutting at a high level, which has been impossible with only the conventional techniques of improving the machinability by cutting using MnS or the like. A soft magnetic iron comprises a chemical composition containing, in mass %, C: 0.02% or less, Si: 0.15% or less, Mn: 0.01% or more and 0.50% or less, P: 0.002% or more and 0.020% or less, S: 0.001% or more and 0.050% or less, Al: 0.05% or less, N: 0.0100% or less, and Se: 0.001% or more and 0.30% or less, with a balance consisting of iron and inevitable impurities.Type: ApplicationFiled: October 22, 2021Publication date: November 23, 2023Applicant: JFE STEEL CORPORATIONInventors: Katsuyuki ICHIMIYA, Koichi NAKASHIMA, Yuta IMANAMI
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Patent number: 11819909Abstract: The method for manufacturing a high-manganese steel cast slab according to the present invention includes manufacturing a cast slab by continuously casting a molten high-manganese steel having a specific chemical composition. In the manufacture, in a continuous-casting machine or during transportation before subsequent charging into a heating furnace for hot rolling, a processing strain is applied to the cast slab having a surface temperature of 600° C. or higher and 1100° C. or lower in such an amount that a processing strain amount calculated by a certain formula is 3.0% or more and 10.0% or less.Type: GrantFiled: January 22, 2020Date of Patent: November 21, 2023Assignee: JFE STEEL CORPORATIONInventors: Yoichi Ito, Norichika Aramaki, Koichi Nakashima, Shigeki Kitsuya
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Publication number: 20220275489Abstract: The steel of the present disclosure contains, in mass %, C: 0.100% to 0.700%, Si: 0.05% to 1.00%, Mn: 20.0% to 40.0%, P: ?0.030%, S: ?0.0050%, Al: 0.01% to 5.00%, Cr: 0.5% to 7.0%, N: 0.0050% to 0.0500%, O: ?0.0050%, Ti: ?0.005%, Nb: ?0.005%, and at least one selected from Ca: 0.0005% to 0.0100%, Mg: 0.0005% to 0.0100%, and REM: 0.0010% to 0.0200%, and has a microstructure with austenite as matrix, where an average grain size is 50 ?m or less, a cleanliness of sulfide inclusion is less than 1.0%, a yield strength is 400 MPa or more, and a percent brittle fracture after a Charpy impact test at ?269° C. is less than 5%.Type: ApplicationFiled: August 18, 2020Publication date: September 1, 2022Applicant: JFE STEEL CORPORATIONInventors: Daichi IZUMI, Koichi NAKASHIMA, Keiji UEDA
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Patent number: 11326238Abstract: Provided is a steel material for high heat input welding having excellent welding heat affected zone low-temperature toughness at ?55° C. in the case that the steel material is welded by high heat input welding with a heat input of more than 80 kJ/cm. The steel material may be used in low-temperature storage tanks, for example. The steel material for high heat input welding includes, in mass %, C: 0.04 to 0.09%, Si: 0.15 to 0.25%, Mn: 1.40 to 2.00%, P: 0.015% or less, S: 0.0005 to 0.0040%, Al: 0.030 to 0.080%, Ti: 0.005 to 0.025%, B: 0.0003 to 0.0020%, Ca: 0.0005 to 0.0030%, N: 0.0030 to 0.0060%, O: 0.0040% or less, Nb: 0.005% or less, and Mo: 0.005% or less, the balance being Fe and incidental impurities.Type: GrantFiled: January 30, 2017Date of Patent: May 10, 2022Assignee: JFE STEEL CORPORATIONInventors: Yuki Toji, Akio Ohmori, Koichi Nakashima, Ryo Arao, Katsuyuki Ichimiya, Kazukuni Hase
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Publication number: 20220118508Abstract: The method for manufacturing a high-manganese steel cast slab according to the present invention includes manufacturing a cast slab by continuously casting a molten high-manganese steel having a specific chemical composition. In the manufacture, in a continuous-casting machine or during transportation before subsequent charging into a heating furnace for hot rolling, a processing strain is applied to the cast slab having a surface temperature of 600° C. or higher and 1100° C. or lower in such an amount that a processing strain amount calculated by a certain formula is 3.0% or more and 10.0% or less.Type: ApplicationFiled: January 22, 2020Publication date: April 21, 2022Applicant: JFE Steel CorporationInventors: Yoichi Ito, Norichika Aramaki, Koichi Nakashima, Shigeki Kitsuya
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Publication number: 20210301378Abstract: Provided is a high-Mn steel having excellent low-temperature toughness and excellent surface characteristics. A high-Mn steel comprises: a chemical composition containing, in mass %, C: 0.100 to 0.700%, Si: 0.05 to 1.00%, Mn: 20.0 to 35.0%, P: ?0.030%, S: ?0.0070%, Al: 0.010 to 0.070%, Cr: 0.50 to 5.00%, N: 0.0050 to 0.0500%, O: ?0.0050%, Ti: ?0.005%, and Nb: ?0.005%, with a balance consisting of Fe and inevitable impurities; and a microstructure having austenite as a matrix, wherein in the microstructure, a Mn concentration of a Mn-concentrated portion is 38.0% or less, and an average KAM value is 0.3 or more, yield stress is 400 MPa or more, absorbed energy vE?196 in a Charpy impact test at ?196° C. is 100 J or more, and percent brittle fracture is less than 10%.Type: ApplicationFiled: July 31, 2019Publication date: September 30, 2021Applicant: JFE STEEL CORPORATIONInventors: Daichi IZUMI, Shigeki KITSUYA, Keiji UEDA, Koichi NAKASHIMA
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Publication number: 20210164067Abstract: Provided is a high-Mn steel which not only has high strength and excellent low-temperature toughness but also has excellent CTOD property at low temperatures. The high-Mn steel has a chemical composition containing, in mass %, C: 0.10-0.70%, Si: 0.05-0.50%, Mn: 20-30%, P: 0.030% or less, S: 0.0070% or less, Al: 0.01-0.07%, Cr: 0.5-7.0%, Ni: 0.01% or more and less than 0.1%, Ca: 0.0005-0.0050%, N: 0.0050-0.0500%, O: 0.0050% or less, Ti: less than 0.0050%, and Nb: less than 0.0050%, the balance consisting of Fe and inevitable impurities, and a microstructure having austenite as a base phase, where the austenite has a grain size of 1 ?m or more and a standard deviation of 9 ?m or less.Type: ApplicationFiled: December 6, 2018Publication date: June 3, 2021Applicant: JFE STEEL CORPORATIONInventors: Koichi NAKASHIMA, Keiji UEDA, Shigeki KITSUYA, Ryo ARAO, Daichi IZUMI, Satoshi IGI, Tomohiro ONO
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Publication number: 20210140023Abstract: Provided is a steel material for high heat input welding having excellent welding heat affected zone low-temperature toughness at ?55° C. in the case that the steel material is welded by high heat input welding with a heat input of more than 80 kJ/cm. The steel material may be used in low-temperature storage tanks, for example. The steel material for high heat input welding includes, in mass %, C: 0.04 to 0.09%, Si: 0.15 to 0.25%, Mn: 1.40 to 2.00%, P: 0.015% or less, S: 0.0005 to 0.0040%, Al: 0.030 to 0.080%, Ti: 0.005 to 0.025%, B: 0.0003 to 0.0020%, Ca: 0.0005 to 0.0030%, N: 0.0030 to 0.0060%, O: 0.0040% or less, Nb: 0.005% or less, and Mo: 0.005% or less, the balance being Fe and incidental impurities.Type: ApplicationFiled: January 30, 2017Publication date: May 13, 2021Applicant: JFE Steel CorporationInventors: Yuki Toji, Akio Ohmori, Koichi Nakashima, Ryo Arao, Katsuyuki Ichimiya, Kazukuni Hase
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Publication number: 20200277500Abstract: Foaming that occurs when a naturally derived water-soluble pigment, such as spirulina blue, an anthocyanin-based pigment, a gardenia pigment, or a monascus pigment, is added to an aqueous solvent, such as water, and dissolved is suppressed. A solid composition containing a naturally derived water-soluble pigment is subjected to a compression treatment to suppress foaming.Type: ApplicationFiled: September 14, 2018Publication date: September 3, 2020Inventors: Aki YOKOTA, Koji HAMASAKI, Koichi NAKASHIMA
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Publication number: 20190352749Abstract: A steel material for high heat input welding used for low-temperature storage tanks, and has excellent joint strength and low-temperature toughness at ?55° C. of a weld heat-affected zone when high heat input welding at a heat input exceeding 80 kJ/cm is performed. The steel material has a specified chemical composition in which Mn, Cu, and Ni are contained so as to satisfy: 1.85?Mn+0.4×(Cu+Ni)?2.10, where Mn, Cu, and Ni represent the contents, by mass%, of respective components or are set to zero if not contained.Type: ApplicationFiled: August 22, 2017Publication date: November 21, 2019Applicant: JFE STEEL CORPORATIONInventors: Koichi NAKASHIMA, Yoshiaki MURAKAMI, Kazukuni HASE
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Publication number: 20190220670Abstract: An acquisition unit acquires a query feature quantity which is a collection of feature quantities for a query moving image and a feature quantity record which is a collection of feature quantities for a candidate moving image. A similarity map generation unit compares the query feature quantity with the feature quantity record, calculates a similarity between the query feature quantity and the feature quantity record for each of frames of the candidate moving image and generates a similarity sequence in which the similarities are chronologically arranged, and generates a similarity map in which the similarity sequences for the respective frames of the candidate moving image are arranged in order of the frames of the candidate moving image.Type: ApplicationFiled: July 11, 2016Publication date: July 18, 2019Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shogo SHIMIZU, Koichi NAKASHIMA, Takashi NISHITSUJI, Katsuhiro KUSANO
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Patent number: 7991501Abstract: A surface machining method for obtaining a planar material of a uniform thickness is provided. This method includes mounting a planar material on a surface plate, setting the coordinate axis in the plane direction of the planar material to X, Y, and setting the coordinate axis in the height direction to Z, virtualizing an XY plane including an origin of the Z direction measured as a distance Z(m,n) from the coordinates (Xm, Yn) of a virtual plane ABCD to the plate thickness center plane S composed of midpoints of segments connecting an upper surface and a lower surface of the planar material, measuring the distance in the Z direction of the plate thickness center plane from the origin in an arbitrary XY plane position, and tilting and cutting the planar material so that the difference between maximum and minimum value of the obtained height data will be minimum.Type: GrantFiled: February 19, 2007Date of Patent: August 2, 2011Assignee: JX Nippon Mining & Metals CorporationInventors: Koichi Nakashima, Nobuyoshi Komachi
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Publication number: 20100040873Abstract: A two-layered copper-clad laminate having a copper layer formed on a polyimide film by sputtering and plating, characterized in that the two-layered copper-clad laminate shows a behavior of shrinkage in MD of the copper-clad laminate and expansion in TD of the copper-clad laminate, and a warpage of the materials for the laminate is 20 mm or less, wherein the warpage represents an extent of lift of the two-layered copper-clad laminate of 100 mm square after maintaining 50% humidity at a temperature of 23° C. for 72 hours. With respect to the two-layered CCL having a copper layer provided on a polyimide film by sputtering and plating, there is provided a two-layered CCL material exhibiting a reduced warpage of the laminate and provides a method for manufacturing the same.Type: ApplicationFiled: November 14, 2007Publication date: February 18, 2010Applicant: NIPPON MINING & METALS CO., LTD.Inventors: Michiya Kohiki, Koichi Nakashima, Naonori Michishita
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Patent number: 7650201Abstract: Provided is a surface treatment method for performing machining such as cutting work, grinding, and electrical discharging to a plate-like material with two- or three-dimensional deformation to realize a uniform thickness. This method includes the steps of mounting the plate-like material on a surface plate, setting a coordinate axis in a plane direction of the plate-like material to be X, Y and setting a coordinate axis in a height direction of the plate-like material to be Z, virtualizing a surface containing an origin of the measured Z direction, measuring a height Z1-n from the origin in an arbitrary plane position, and inclining and cutting the plate-like material so that an absolute value of a difference between a maximum value Zmax and a minimum value Zmin of the obtained height data will be minimum.Type: GrantFiled: June 27, 2005Date of Patent: January 19, 2010Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Koichi Nakashima, Nobuyoshi Komachi
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Publication number: 20090055009Abstract: Provided is a surface machining method for performing machining such as cutting, grinding, electrical discharging or the like to obtain a planar material of a uniform thickness.Type: ApplicationFiled: February 19, 2007Publication date: February 26, 2009Applicant: NIPPON MINING & METALS CO., LTD.Inventors: Koichi Nakashima, Nobuyoshi Komachi
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Publication number: 20070233312Abstract: Provided is a surface treatment method for performing machining such as cutting work, grinding, and electrical discharging to a plate-like material with two- or three-dimensional deformation to realize a uniform thickness. This method includes the steps of mounting the plate-like material on a surface plate, setting a coordinate axis in a plane direction of the plate-like material to be X, Y and setting a coordinate axis in a height direction of the plate-like material to be Z, virtualizing a surface containing an origin of the measured Z direction, measuring a height Z1-n from the origin in an arbitrary plane position, and inclining and cutting the plate-like material so that an absolute value of a difference between a maximum value Zmax and a minimum value Zmin of the obtained height data will be minimum.Type: ApplicationFiled: June 27, 2005Publication date: October 4, 2007Applicant: NIPPON MINING & METALS CO., LTD.Inventors: Koichi Nakashima, Nobuyoshi Komachi
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Patent number: 6675314Abstract: A source clock regenerating section (10) comprises an operating section (2) for taking a weighted average value of a plurality of buffer remaining volumes H that have been sequentially detected, multiplying a predetermined sensitivity coefficient A to this weighted average value, and further adding a predetermined offset value, thereby to obtain a control value U for regenerating the source clock; and an operation control section (5) for setting a local clock (14) to a manipulated variable to be used for calculating the control value capable of converging to the source clock at a high speed during a period from when a source clock regeneration operation has started till when the local clock (14) as a regeneration source clock satisfies a predetermined condition for coming closer to a source clock frequency, and for setting the local clock to the manipulated variable capable of stably regenerating the source clock after this predetermined condition has been satisfied.Type: GrantFiled: November 1, 2000Date of Patent: January 6, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hirotoshi Yamada, Koichi Nakashima, Kentaro Tanaka