Patents by Inventor Mitsuharu Yonemura
Mitsuharu Yonemura 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: 20230407427Abstract: An austenitic stainless steel foil according to this disclosure consists of, in mass %, C: 0.150% or less, Si: 1.00% or less, Mn: 2.00% or less, P: 0.045% or less, S: 0.0300% or less, Cr: 16.00 to 20.00%, Ni: 6.00 to 10.50%, N: 0.100% or less, Mo: 0 to 2.50%, Nb: 0 to 0.12%, V: 0 to 1.00%, Ta: 0 to 0.50%, Hf: 0 to 0.10%, Co: 0 to 0.50%, B: 0 to 0.0100%, Ca: 0 to 0.0200%, Mg: 0 to 0.0200%, rare earth metal: 0 to 0.0100%, Al: 0 to 0.010%, Ti: 0 to 0.500%, Zr: 0 to 0.100%, and Cu: 0 to 3.00%, with the balance being Fe and impurities. In an X-ray diffraction profile obtained using CuK? radiation, a full width at half maximum Fw of a peak of a {111} plane is greater than 0.366°.Type: ApplicationFiled: October 12, 2021Publication date: December 21, 2023Applicant: NIPPON STEEL Chemical & Material Co., Ltd.Inventors: Mitsuharu YONEMURA, Keiichi KIMURA, Takuya HIRAGA, Yuji KUMA
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Publication number: 20210340664Abstract: A metal mask material for OLED use reduced in amount warpage due to etching, a method for manufacturing the same, and a metal mask are provided. The metal mask material and metal mask of the present invention contain, by mass %, Ni: 35.0 to 37.0% and Co: 0.00 to 0.50%, have a balance of Fe and impurities, have thicknesses of 5.00 ?m or more and 50.00 ?m or less, and have amounts of warpage defined as maximum values in amounts of rise of four corners of a square shaped sample of the metal mask material of 100 mm sides when etching the sample from one surface until the thickness of the sample becomes ? and placing the etched sample on a surface plate of 5.0 mm or less.Type: ApplicationFiled: September 27, 2019Publication date: November 4, 2021Applicant: NIPPON STEEL Chemical & Material Co., Ltd.Inventors: Mitsuharu YONEMURA, Naoki FUJIMOTO, Keita KIMURA, Hiroto UNNO
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Patent number: 10497497Abstract: Disclosed is an R-T-B—Ga-based magnet material ahoy where R is at least one element selected from rare earth metals including Y and excluding Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and T is one or more transition metals with Fe being an essential element. The R-T-B—Ga-based magnet material alloy includes: an R2T14B phase 3 which is a principal phase, and an R-rich phase (1 and 2) which is a phase enriched with the R, wherein a non-crystalline phase 1 in the R-rich phase has a Ga content (mass %) that is higher than a Ga content (mass %) of a crystalline phase 2 in the R-rich phase. With this, it is possible to enhance the magnetic properties of rare earth magnets that are manufactured from the alloy and reduce variations in the magnetic properties thereof.Type: GrantFiled: January 12, 2018Date of Patent: December 3, 2019Assignee: SANTOKU CORPORATIONInventors: Akihiko Saguchi, Noriyuki Negi, Mitsuharu Yonemura
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Patent number: 10381640Abstract: Provided is a negative electrode active material that can improve the capacity per volume and charge-discharge cycle characteristics of a nonaqueous electrolyte secondary battery represented by a lithium ion secondary battery. The negative electrode active material according to the present embodiment contains an alloy phase. The alloy phase undergoes thermoelastic diffusionless transformation when releasing or occluding metal ions. The negative electrode active material of the present embodiment is used in a nonaqueous electrolyte secondary battery. Thermoelastic diffusionless transformation refers to so-called thermoelastic martensitic transformation.Type: GrantFiled: August 27, 2013Date of Patent: August 13, 2019Assignee: NIPPON STEEL CORPORATIONInventors: Sukeyoshi Yamamoto, Noriyuki Negi, Tatsuo Nagata, Koji Moriguchi, Mitsuharu Yonemura, Tomoyuki Kakeshita, Tomoyuki Terai, Takashi Fukuda
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Publication number: 20190013122Abstract: Disclosed is an R-T-B—Ga-based magnet material ahoy where R is at least one element selected from rare earth metals including Y and excluding Gd, Tb, Dy, Ho, Er, TM, Yb, and Lu, and Tis one or more transition metals with Fe being an essential element. The R-T-B—Ga-based magnet material alloy includes: an R2T14B phase 3 which is a principal phase, and an R-rich phase (1 and 2) which is a phase enriched with the R, wherein a non-crystalline phase 1 in the R-rich phase has a Ga content (mass %) that is higher than a Ga content (mass %) of a crystalline phase 2 in the R-rich phase. With this, it is possible to enhance the magnetic properties of rare earth magnets that are manufactured from the alloy and reduce variations in the magnetic properties thereof.Type: ApplicationFiled: January 12, 2018Publication date: January 10, 2019Inventors: Akihiko SAGUCHI, Noriyuki NEGI, Mitsuharu YONEMURA
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Patent number: 10106870Abstract: A copper alloy consisting of two or more of Cr, Ti and Zr, and the balance Cu and impurities, in which the relationship between the total number N and the diameter X satisfies the following formula (1). Ag, P, Mg or the like may be included instead of a part of Cu. This copper alloy is obtained by cooling a bloom, a slab, a billet, or a ingot in at least in a temperature range from the bloom, the slab, the billet, or the ingot temperature just after casting to 450° C., at a cooling rate of 0.5° C./s or more. After the cooling, working in a temperature range of 600° C. or lower and further heat treatment of holding for 30 seconds or more in a temperature range of 150 to 750° C. are desirably performed. The working and the heat treatment are desirably performed a plurality of times. log N?0.4742+17.629×exp(?0.Type: GrantFiled: March 20, 2017Date of Patent: October 23, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yasuhiro Maehara, Mitsuharu Yonemura, Takashi Maeda, Keiji Nakajima, Tsuneaki Nagamichi
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Patent number: 10023940Abstract: A copper alloy consisting of two or more of Cr, Ti and Zr, and the balance Cu and impurities, in which the relationship between the total number N and the diameter X satisfies the following formula (1). Ag, P, Mg or the like may be included instead of a part of Cu. This copper alloy is obtained by cooling a bloom, a slab, a billet, or a ingot in at least in a temperature range from the bloom, the slab, the billet, or the ingot temperature just after casting to 450° C., at a cooling rate of 0.5° C./s or more. After the cooling, working in a temperature range of 600° C. or lower and further heat treatment of holding for 30 seconds or more in a temperature range of 150 to 750° C. are desirably performed. The working and the heat treatment are most desirably performed for a plurality of times. log N?0.4742+17.629×exp(?0.Type: GrantFiled: March 20, 2006Date of Patent: July 17, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yasuhiro Maehara, Mitsuharu Yonemura, Takashi Maeda, Keiji Nakajima, Tsuneaki Nagamichi
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Patent number: 9859026Abstract: An austenitic alloy tube subjected to a cold working and an annealing heat treatment contains C: 0.01% to 0.15%, Cr: 10.0% to 40.0%, Ni: 8.0% to 80.0%, in mass %, and has a metallographic structure satisfying the following Expressions (i) to (iii). R?f1??(i) R=I220/I111??(ii) f1=0.28×(F1118.0/(F1118.0+0.358.0))??(iii) Where, in the above Expressions, R is a ratio of an integrated intensity of {220} to an integrated intensity of {111} on a surface layer which is measured by a grazing incidence X-ray diffraction method, I220 is the integrated intensity of {220}, I111 is the integrated intensity of {111}, and F111 is full width of half maximum of {111} on the surface layer which is measured by the grazing incidence X-ray diffraction method.Type: GrantFiled: June 19, 2013Date of Patent: January 2, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yumi Momozono, Mitsuharu Yonemura, Yasuhiro Masaki, Manabu Kanzaki
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Publication number: 20170247779Abstract: A copper alloy consisting of two or more of Cr, Ti and Zr, and the balance Cu and impurities, in which the relationship between the total number N and the diameter X satisfies the following formula (1). Ag, P, Mg or the like may be included instead of a part of Cu. This copper alloy is obtained by cooling a bloom, a slab, a billet, or a ingot in at least in a temperature range from the bloom, the slab, the billet, or the ingot temperature just after casting to 450° C., at a cooling rate of 0.5° C./s or more. After the cooling, working in a temperature range of 600° C. or lower and further heat treatment of holding for 30 seconds or more in a temperature range of 150 to 750° C. are desirably performed. The working and the heat treatment are desirably performed a plurality of times. log N?0.4742+17.629×exp(?0.Type: ApplicationFiled: March 20, 2017Publication date: August 31, 2017Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yasuhiro MAEHARA, Mitsuharu Yonemura, Takashi Maeda, Keiji Nakajima, Tsuneaki Nagamichi
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Patent number: 9612008Abstract: There is provided an austenitic stainless steel tube containing, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, wherein the steel tube has a metal micro-structure, in which an average dislocation density, which is determined by XRD measurement using a Co tube, is 3.0×1014/m2 or higher, on the inner surface side of the steel tube. The crystal grain size of the steel tube is preferably 50 ?m or smaller. The steel tube of the present invention is suitable as a steel tube used in power-generating plants.Type: GrantFiled: May 28, 2012Date of Patent: April 4, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yoshitaka Nishiyama, Mitsuharu Yonemura
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Publication number: 20150200392Abstract: Provided is a negative electrode active material that can improve the capacity per volume and charge-discharge cycle characteristics of a nonaqueous electrolyte secondary battery represented by a lithium ion secondary battery. The negative electrode active material according to the present embodiment contains an alloy phase. The alloy phase undergoes thermoelastic diffusionless transformation when releasing or occluding metal ions. The negative electrode active material of the present embodiment is used in a nonaqueous electrolyte secondary battery. Thermoelastic diffusionless transformation refers to so-called thermoelastic martensitic transformation.Type: ApplicationFiled: August 27, 2013Publication date: July 16, 2015Inventors: Sukeyoshi Yamamoto, Noriyuki Negi, Tatsuo Nagata, Koji Moriguchi, Mitsuharu Yonemura, Tomoyuki Kakeshita, Tomoyuki Terai, Takashi Fukuda
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Publication number: 20150194227Abstract: An austenitic alloy tube subjected to a cold working and an annealing heat treatment contains C: 0.01% to 0.15%, Cr: 10.0% to 40.0%, Ni: 8.0% to 80.0%, in mass %, and has a metallographic structure satisfying the following Expressions (i) to (iii). R?f1??(i) R=I220/I111??(ii) f1=0.28×(F1118.0/(F1118.0+0.358.0))??(iii) Where, in the above Expressions, R is a ratio of an integrated intensity of {220} to an integrated intensity of {111} on a surface layer which is measured by a grazing incidence X-ray diffraction method, I220 is the integrated intensity of {220}, I111 is the integrated intensity of {111}, and F111 is full width of half maximum of {111} on the surface layer which is measured by the grazing incidence X-ray diffraction method.Type: ApplicationFiled: June 19, 2013Publication date: July 9, 2015Inventors: Yumi Momozono, Mitsuharu Yonemura, Yasuhiro Masaki, Manabu Kanzaki
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Publication number: 20150010426Abstract: Disclosed is an R-T-B—Ga-based magnet material alloy where R is at least one element selected from rare earth metals including Y, and T is one or more transition metals with Fe being an essential element. The R-T-B—Ga-based magnet material alloy includes: an R2T14B phase 3 which is a principal phase, and an R-rich phase (1 and 2) which is a phase enriched with the R, wherein a non-crystalline phase 1 in the R-rich phase has a Ga content (mass %) that is higher than a Ga content (mass %) of a crystalline phase 2 in the R-rich phase. With this, it is possible to enhance the magnetic properties of rare earth magnets that are manufactured from the alloy and reduce variations in the magnetic properties thereof.Type: ApplicationFiled: February 1, 2013Publication date: January 8, 2015Inventors: Akihiko Saguchi, Noriyuki Negi, Mitsuharu Yonemura
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Publication number: 20140150734Abstract: There is provided an austenitic stainless steel tube containing, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, wherein the steel tube has a metal micro-structure, in which an average dislocation density, which is determined by XRD measurement using a Co tube, is 3.0×1014/m2 or higher, on the inner surface side of the steel tube. The crystal grain size of the steel tube is preferably 50 ?m or smaller. The steel tube of the present invention is suitable as a steel tube used in power-generating plants.Type: ApplicationFiled: May 28, 2012Publication date: June 5, 2014Applicant: NIPPON STEET & SUMITOMO METAL CORPORATIONInventors: Yoshitaka Nishiyama, Mitsuharu Yonemura
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Patent number: 8241439Abstract: A Ni—Cr alloy tube demonstrating an excellent corrosion resistance in a high temperature water environment can be provided, wherein the difference between uniform lattice strains of the surface layer thereof satisfies the following formulas (1) and (2). S?0.002??(1) S=D500?D?200??(2) wherein the meanings of the individual symbols in the above described formulas are as follows: S: The difference between uniform lattice strains (?) of the surface layer D500: The {111} interplanar spacing (?) at a depth of 500 nm from the material surface D?200: The average value of the {111} interplanar spacings (?) at the depth of 200 nm or less from the material surface.Type: GrantFiled: November 15, 2010Date of Patent: August 14, 2012Assignee: Sumitomo Metal Industries, Ltd.Inventors: Manabu Kanzaki, Mitsuharu Yonemura, Masanari Kimoto, Shoji Kinomura, Toshihiro Imoto
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Publication number: 20110056590Abstract: A Ni—Cr alloy tube demonstrating an excellent corrosion resistance in a high temperature water environment can be provided, wherein the difference between uniform lattice strains of the surface layer thereof satisfies the following formulas (1) and (2). S?0.Type: ApplicationFiled: November 15, 2010Publication date: March 10, 2011Applicant: Sumitomo Metal Industries, Ltd.Inventors: Manabu KANZAKI, Mitsuharu Yonemura, Masanari Kimoto, Shoji Kinomura, Toshihiro Imoto
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Publication number: 20100189593Abstract: A copper alloy material consists of, by mass % Ti: 0.01-2.5%, Cr: 0.01-0.5%, Fe: 0.01% or more and less than 1%, and the balance Cu and impurities. The copper alloy possesses excellent strength, electrical conductivity, and workability without containing any environmentally harmful elements. These properties are attained by control of the total number and the diameter of precipitates and inclusions having a diameter of 1 ?m, and control of the relationship between tensile strength TS (MPa) and electrical conductivity, IACS (%). The copper alloy material is a sheet and the relationship between tensile strength and the bending workability in a bad way B90 of the copper alloy material as well as the relationship between elongation and tensile strength are also controlled with respect to each other for property improvement.Type: ApplicationFiled: January 26, 2010Publication date: July 29, 2010Inventors: Yasuhiro MAEHARA, Mitsuharu YONEMURA, Keiji NAKAJIMA, Tsuneaki NAGAMICHI
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Publication number: 20070062619Abstract: A copper alloy that has a specific chemical composition, the balance being Cu and impurities, in which the relationship between the total number N and the diameter X satisfies the following formula (1). This copper alloy is obtained by cooling a bloom, a slab, a billet or an ingot in at least a temperature range from the temperature of the bloom, the slab, the billet or the ingot just after casting to 450° C., at a cooling rate of 0.5° C./s or more. After the cooling, working in a temperature range of 600° C. or lower and further heat treatment of holding for 30 seconds or more in a temperature range of 150 to 750° C. are desirably performed. The working and the heat treatment are most desirably performed for a plurality of times. log N<0.4742+17.629×exp(?0.Type: ApplicationFiled: September 11, 2006Publication date: March 22, 2007Inventors: Yasuhiro Maehara, Mitsuharu Yonemura, Keiji Nakajima, Tsuneaki Nagamichi
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Publication number: 20060239853Abstract: A copper alloy consisting of two or more of Cr, Ti and Zr, and the balance Cu and impurities, in which the relationship between the total number N and the diameter X satisfies the following formula (1). Ag, P, Mg or the like may be included instead of a part of Cu. This copper alloy is obtained by cooling a bloom, a slab, a billet, or a ingot in at least in a temperature range from the bloom, the slab, the billet, or the ingot temperature just after casting to 450° C., at a cooling rate of 0.5° C./s or more. After the cooling, working in a temperature range of 600° C. or lower and further heat treatment of holding for 30 seconds or more in a temperature range of 150 to 750° C. are desirably performed. The working and the heat treatment are most desirably performed for a plurality of times. log N?0.4742+17.629×exp(?0.Type: ApplicationFiled: March 20, 2006Publication date: October 26, 2006Applicant: SUMITOMO METAL INDUSTRIES, LTD.Inventors: Yasuhiro Maehara, Mitsuharu Yonemura, Takashi Maeda, Keiji Nakajima, Tsuneaki Nagamichi
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Publication number: 20060180293Abstract: A continuous casting mold for a Cu alloy, using any one member selected from a glassy carbon, a metal-based self-lubricating composite or a graphite with a bulk density exceeding 1.92, at least for the mold member including the solidification starting position of the Cu alloy melt. A continuous casting mold for a Cu alloy, composed of any one member selected from a graphite, a ceramic and a metal member or of a combination of two or more parts of members thereof, in which at least the inner wall in the solidification starting position of the Cu alloy melt is coated with a self-lubricant or a metal-based self-lubricating composite material.Type: ApplicationFiled: March 23, 2006Publication date: August 17, 2006Applicant: SUMITOMO METAL INDUSTRIES, LTD.Inventors: Yasuhiro Maehara, Mitsuharu Yonemura, Keiji Nakajima, Naotsugu Yoshida, Masahiro Aoki