Patents by Inventor Hiroyuki Hirata
Hiroyuki Hirata 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: 20240351134Abstract: Provided are: a method for friction-joining galvanized steel sheets in which admixture of zinc into a joined part is effectively suppressed, and with which it is possible to obtain a joined part that is coated with a galvanized layer; and a joined structure obtained through the aforementioned joining method.Type: ApplicationFiled: August 3, 2022Publication date: October 24, 2024Inventors: Hidetoshi FUJII, Yoshiaki MORISADA, Hiroki FUJIMOTO, Hiroyuki HIRATA, Shinji KODAMA
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Publication number: 20240318289Abstract: Provided is a heat-resistant ferritic steel having a chemical composition containing, by mass %, C: 0.07 to 0.14%, Si: 0.15 to 0.35%, Mn: 0.30 to 0.55%, P: 0.0250% or less, S: 0.0030% or less, Ni: 0.15 to 0.35%, Cr: 8.0 to 9.7%, Mo: 0.20 to 0.60%, W: 1.50 to 2.30%, V: 0.16 to 0.25%, Nb: 0.020 to 0.120%, B: 0.0010 to 0.0050%, N: 0.010 to 0.080%, Al: 0.020% or less, and O: 0.020% or less, with the balance Fe and impurities, wherein VER, i.e., the V content (mass %) in precipitates obtained by extracted residue analysis satisfies [?0.2×C+0.060?VER??0.1×C+0.160].Type: ApplicationFiled: July 14, 2021Publication date: September 26, 2024Applicant: NIPPON STEEL CORPORATIONInventors: Hiroyuki HIRATA, Katsuki TANAKA, Masayuki TAKIGUCHI, Mitsuru YOSHIZAWA, Junichi HIGUCHI, Takahiro OSUKI
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Patent number: 12054818Abstract: There is provided a duplex stainless steel tube including a chemical composition consisting of, in mass %, C: 0.008 to 0.030%, Si: 0.10 to 0.70%, Mn: 0.80 to 2.60%, P: 0.030% or less, S: 0.0001 to 0.0050%, O: 0.0004 to 0.0150%, Sn: 0.0001% or more to less than 0.0100%, Cu: 0.10 to 2.50%, Ni: more than 2.50 to 5.50% or less, Cr: 21.5 to 25.5%, Mo: 0.10 to 0.50%, N: 0.050 to 0.200%, Al: 0.200% or less, and optional elements, with the balance: Fe and impurities, wherein 4S+8O+Sn is 0.0040 to 0.0900, and 4S+Sn is 0.0180 or less.Type: GrantFiled: June 23, 2021Date of Patent: August 6, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyuki Hirata, Shohgo Aota, Mitsuru Yoshizawa, Takahiro Osuki
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Publication number: 20240240295Abstract: A composite tube is provided that includes a first tube and a second tube. A chemical composition of the first tube includes, in mass %, C: more than 0.060% to 0.400% or less, Si: 0.01 to 1.00%, Mn: 0.01 to 1.20%, P: 0.0350% or less, S: 0.0150% or less, Sn: 0.0005 to 0.0400%, Al: 0.040% or less, N: 0.050% or less, O: 0.030% or less, and the balance: Fe and impurities. A chemical composition of the second tube includes, in mass %, C: 0.003 to 0.100%, Si: 0.01 to 1.50%, Mn: 0.01 to 2.20%, P: 0.0400% or less, S: 0.0100% or less, Sn: 0.0005 to 0.0300%, Ni: 7.0 to 52.0%, Cr: 15.0 to 27.0%, Al: 0.001 to 0.600%, N: 0.001 to 0.150%, O: 0.030% or less, and the balance: Fe and impurities. The composite tube satisfies formulas [Siave+6×Pave+20×Save+2×Snave?1.1000] and [0.0015?4×Save+Snave].Type: ApplicationFiled: August 6, 2021Publication date: July 18, 2024Inventors: Hiroyuki HIRATA, Mitsuru YOSHIZAWA, Katsuki TANAKA, Takahiro OSUKI
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Patent number: 11866814Abstract: An austenitic stainless steel, which consists of by mass percent, C: not more than 0.02%, Si: not more than 1.5%, Mn: not more than 2%, Cr: 17 to 25%, Ni: 9 to 13%, Cu: more than 0.26% not more than 4%, N: 0.06 to 0.35%, sol. Al: 0.008 to 0.03%. One or more elements selected from Nb, Ti, V, TA, Hf, and Zr in controlled amounts can be included with the balance being Fe and impurities. P, S, Sn, As, Zn, Pb and Sb among the impurities are controlled as P: 0.006 to 0.04%, S: 0.0004 to 0.03%, Sn: 0.001 to 0.1%, As: not more than 0.01%, Zn: not more than 0.01%, Pb: not more than 0.01% and Sb: not more than 0.01%. The amounts of S, P, Sn, As, Zn, Pb and Sb and the amounts of Nb, Ta, Zr, Hf, and Ti are further controlled using formulas.Type: GrantFiled: January 23, 2020Date of Patent: January 9, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Takahiro Osuki, Kazuhiro Ogawa, Hiroyuki Hirata, Yoshitaka Nishiyama
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Patent number: 11834731Abstract: A method of producing a ferritic heat-resistant steel welded joint, the method including: a multi-layer welding step in which a ferritic heat-resistant steel base material including B at 0.006% by mass to 0.023% by mass is multi-layer welded using a Ni-based welding material for heat-resistant alloy, wherein root pass welding is performed under a welding condition such that a ratio of an area [SBM] that has been melted of the ferritic heat-resistant steel base material to an area [SWM] of a weld metal, in a transverse cross-section of a weldment after the root pass welding but before second pass welding in the multi-layer welding step, satisfies the following formula (1): 0.1?[SBM]/[SWM]??50×[% BBM]+1.3, with respect to a mass percent of B, [% BBM], which is included in the ferritic heat-resistant steel base material.Type: GrantFiled: December 5, 2019Date of Patent: December 5, 2023Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyuki Hirata, Kana Jotoku, Shinnosuke Kurihara, Katsuki Tanaka
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Publication number: 20230220508Abstract: A method for producing an austenitic heat resistant steel in which a difference between a content of Nb and an amount of Nb analyzed as extraction residues satisfies [0.170?Nb?NbER?0.480], the method including: a forming step of machining and forming a steel having a predetermined chemical composition into a product shape; a solution heat treatment step of performing, after the forming step, heat treatment under conditions including a heat treatment temperature satisfying [?250Nb+1200?T??100Nb+1290] and a soaking time satisfying [405?0.3T?t?2475?1.5T]; and a cooling step of performing cooling after the solution heat treatment step.Type: ApplicationFiled: April 21, 2021Publication date: July 13, 2023Inventors: Hiroyuki HIRATA, Masahiro SETO, Mitsuru YOSHIZAWA, Junichi HIGUCHI, Takahiro OSUKI
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Publication number: 20230212724Abstract: There is provided a duplex stainless steel tube including a chemical composition consisting of, in mass %, C: 0.008 to 0.030%, Si: 0.10 to 0.70%, Mn: 0.80 to 2.60%, P: 0.030% or less, S: 0.0001 to 0.0050%, O: 0.0004 to 0.0150%, Sn: 0.0001% or more to less than 0.0100%, Cu: 0.10 to 2.50%, Ni: more than 2.50 to 5.50% or less, Cr: 21.5 to 25.5%, Mo: 0.10 to 0.50%, N: 0.050 to 0.200%, Al: 0.200% or less, and optional elements, with the balance: Fe and impurities, wherein 4S+8O+Sn is 0.0040 to 0.0900, and 4S+Sn is 0.0180 or less.Type: ApplicationFiled: June 23, 2021Publication date: July 6, 2023Inventors: Hiroyuki HIRATA, Shohgo AOTA, Mitsuru YOSHIZAWA, Takahiro OSUKI
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Publication number: 20230203629Abstract: There is provided an austenitic heat resistant steel including a chemical composition that consists of, in mass %, C: 0.04 to 0.12%, Si: 0.01 to 0.30%, Mn: 0.50 to 1.50%, P: 0.001 to 0.040%, S: less than 0.0050%, Cu: 2.2 to 3.8%, Ni: 8.0 to 11.0%, Cr: 17.7 to 19.3%, Mo: 0.01 to 0.55%, Nb: 0.400 to 0.650%, B: 0.0010 to 0.0060%, N: 0.050 to 0.160%, Al: 0.025% or less, and O: 0.020% or less, with the balance: Fe and impurities and that satisfies [0.170?Nb?NbER?0.480].Type: ApplicationFiled: April 21, 2021Publication date: June 29, 2023Inventors: Masahiro SETO, Hiroyuki HIRATA, Mitsuru YOSHIZAWA, Junichi HIGUCHI, Takahiro OSUKI
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Publication number: 20220404576Abstract: A lens unit and a camera module in which the electrical wiring extending from the electrically functional component in the lens barrel can be guided to the image side without interfering with an assembly operation, without the need of ensuring a wiring space in the lens barrel, and without forming an elongated through hole in the lens barrel. The lens barrel includes: i) a first through hole extending in the longitudinal direction inside the side wall to guide the electric wiring from the component to the image side end of the flange; ii) a second through hole extending radially on the side wall so the first through hole can communicate with the outside of the barrel; iii) an accommodation groove on the outer peripheral surface of the side wall to communicate with the second through hole, in order to accommodate the wiring and guide the wiring to the image side.Type: ApplicationFiled: October 30, 2020Publication date: December 22, 2022Applicant: MAXELL, LTD.Inventor: Hiroyuki HIRATA
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Publication number: 20220325394Abstract: An austenitic heat resisting steel includes, as a chemical composition, by mass %: C: 0.04% to 0.12%; Si: 0.10% to 0.30%; Mn: 0.20% to 0.80%; P: 0% to 0.030%; S: 0.0001% to 0.0020%: Sn: 0.0005% to 0.0230%; Cu: 2.3% to 3.8%; Co: 0.90% to 2.40%; Ni: 22.0% to 28.0%; Cr: 20.0% to 25.0%; Mo: 0.01% to 0.40%; W: 2.8% to 4.2%; Nb: 0.20% to 0.80%; B: 0.0010% to 0.0050%; and N: 0.16% to 0.30%, and a remainder of Fe and impurities, optionally further includes one or more selected from Al, O, V, Ti, Ta, C, Mg, and REM, in which 0.0012%?[% S]+[% Sn]?2.5×[% B]+0.0125% is satisfied.Type: ApplicationFiled: July 30, 2020Publication date: October 13, 2022Applicant: NIPPON STEEL CORPORATIONInventors: Hiroyuki HIRATA, Mitsuru YOSHIZAWA, Junichi HIGUCHI, Katsuki TANAKA
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Publication number: 20220235445Abstract: A ferritic heat-resistant steel includes, by mass: from 0.06 to 0.11% of C; from 0.15 to 0.35% of Si; from 0.35 to 0.65% of Mn; from 0 to 0.02% of P; from 0 to 0.003% of S; from 0.005 to 0.25% of Ni; from 0.005 to 0.25% of Cu; from 2.7 to 3.3% of Co; from 8.3 to 9.7% of Cr; from 2.5 to 3.5% of W; from 0.15 to 0.25% of V; from 0.03 to 0.08% of Nb; from 0.002 to 0.04% of Ta; from 0.01 to 0.06% of Nd; from 0.006 to 0.016% of B; from 0.005 to 0.015% of N; from 0 to 0.02% of Al; and from 0 to 0.02% of O, with a balance consisting of Fe and impurities, and an amount of W, which is analyzed as an electrolytically extracted residue, [% W]ER, satisfying: ?10×[% B]+0.26?[% W]ER?10×[% B]+0.54.Type: ApplicationFiled: March 19, 2020Publication date: July 28, 2022Inventors: Hiroyuki HIRATA, Mitsuru YOSHIZAWA, Junichi HIGUCHI, Katsuki TANAKA
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Patent number: 11339461Abstract: A austenitic stainless steel which has a chemical composition consisting of, by mass %, C: 0.04 to 0.12%, Si: 0.25 to 0.55%, Mn: 0.7 to 2.0%, P: 0.035% or less, S: 0.0015% or less, Cu: 0.02 to 0.80%, Co: 0.02 to 0.80%, Ni: 10.0 to 14.0%, Cr: 15.5 to 17.5%, Mo: 1.5 to 2.5%, N: 0.01 to 0.10%, Al: 0.030% or less, O: 0.020% or less, Sn: 0 to 0.01%, Sb: 0 to 0.01%, As: 0 to 0.01%, Bi: 0 to 0.01%, V: 0 to 0.10%, Nb: 0 to 0.10%, Ti: 0 to 0.10%, W: 0 to 0.50%, B: 0 to 0.005%, Ca: 0 to 0.010%, Mg: 0 to 0.010% and REM: 0 to 0.10%, with the balance being Fe and impurities, and satisfying [18.0?Cr+Mo+1.5×Si?20.0] and [14.5?Ni+30×(C+N)+0.5×(Mn+Cu+Co)?19.5].Type: GrantFiled: October 3, 2018Date of Patent: May 24, 2022Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyuki Hirata, Katsuki Tanaka, Kana Jotoku
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Patent number: 11339462Abstract: A austenitic stainless steel weld metal which has a chemical composition consisting of, by mass %, C: 0.01 to 0.10%, Si: 0.20 to 0.70%, Mn: 0.8 to 2.5%, P: 0.035% or less, S: 0.0030% or less, Cu: 0.01 to 0.60%, Co: 0.01 to 1.00%, Ni: 8.0 to 12.0%, Cr: 14.5 to 17.5%, Mo: 1.0 to 2.2%, N: 0.02 to 0.10%, Al: 0.030% or less, O: 0.020% or less, Sn: 0 to 0.01%, Sb: 0 to 0.01%, As: 0 to 0.01%, Bi: 0 to 0.01%, V: 0 to 0.10%, Nb: 0 to 0.10%, Ti: 0 to 0.10%, W: 0 to 0.50%, B: 0 to 0.005%, Ca: 0 to 0.010%, Mg: 0 to 0.010% and REM: 0 to 0.10%, with the balance being Fe and impurities, and satisfying [17.5?Cr+Mo+1.5×Si?19.5] and [11.0?Ni+30×(C+N)+0.5×(Mn+Cu+Co)?17.0].Type: GrantFiled: October 3, 2018Date of Patent: May 24, 2022Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyuki Hirata, Katsuki Tanaka, Kana Jotoku
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Publication number: 20220042150Abstract: A method of producing a ferritic heat-resistant steel welded joint, the method including: a multi-layer welding step in which a ferritic heat-resistant steel base material including B at 0.006% by mass to 0.023% by mass is multi-layer welded using a Ni-based welding material for heat-resistant alloy, wherein root pass welding is performed under a welding condition such that a ratio of an area [SBM] that has been melted of the ferritic heat-resistant steel base material to an area [SWM] of a weld metal, in a transverse cross-section of a weldment after the root pass welding but before second pass welding in the multi-layer welding step, satisfies the following formula (1): 0.1?[SBM]/[SWM]??50×[% BBM]+1.3, with respect to a mass percent of B, [% BBM], which is included in the ferritic heat-resistant steel base material.Type: ApplicationFiled: December 5, 2019Publication date: February 10, 2022Inventors: Hiroyuki HIRATA, Kana JOTOKU, Shinnosuke KURIHARA, Katsuki TANAKA
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Patent number: 11188567Abstract: A data analysis support apparatus includes a relationship network generation section that analyzes a relationship between operating systems, a relationship between operation data tables, a relationship between data items possessed by the operation data tables and a relationship between data values possessed by records of the operation data tables and stores them, as a relationship network; a data item classification section that classifies data items that become a data analysis target into a first data type based on an actual value and a second data type based on a planned value; an analysis data table generation section that generates and accumulates an analysis data table to be used for data analysis; a data model generation section that generates, as a data model, a data item group that allows data analysis in combination; and an analysis target item presentation section that recommends a data item to be made an analysis target.Type: GrantFiled: July 21, 2017Date of Patent: November 30, 2021Assignee: Hitachi, Ltd.Inventors: Yuko Yamashita, Tsuyoshi Minakawa, Tomoe Tomiyama, Kenji Kawasaki, Hidenori Yamamoto, Takeshi Handa, Takashi Tsuno, Hiroyuki Hirata
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Patent number: 11169355Abstract: A lens unit capable of checking the airtightness of a seal member between an object side lens and an inner circumferential surface of a lens barrel. A part of an end portion of an air hole on the object side is opened radially inward from the inner circumferential surface of the lens barrel, and at least part of the end portion of the air hole on the image side is opened. When the image side lens is in close contact with the lens installation surface of the flange portion, the air fills the lens barrel through the air hole. The seal member provided between the object side lens and the inner circumferential surface of the lens barrel is damaged or it's not attached to a predetermined position from the beginning, it's still possible to measure air leakages, thus rendering it possible to exactly check the airtightness of the seal member.Type: GrantFiled: May 11, 2018Date of Patent: November 9, 2021Assignee: MAXELL, LTD.Inventor: Hiroyuki Hirata
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Publication number: 20210294066Abstract: A lens unit has a snow melting function without causing an increase in size. The lens unit includes: a cylindrical lens barrel; and a plurality of lenses arranged side by side along the axial direction of the lens barrel on the inner peripheral side of the lens barrel. A heater unit that generates a heat when energized is provided between the flange portion (flat portion) of the lens disposed on the most object side of the lens barrel and the flange portion (flat portion) of the lens adjacent to the lens.Type: ApplicationFiled: May 24, 2019Publication date: September 23, 2021Applicant: Maxell, Ltd.Inventors: Hiroyuki HIRATA, Akira INABA, Osamu ISHIZAKI
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Patent number: 11090755Abstract: The present invention provides a welding material for ferritic heat-resistant steel, a welded joint for ferritic heat-resistant steel, and a method for producing the welded joint for to form a weld metal having a high creep strength and a high toughness in welding a ferritic heat-resistant steel that contains B. The welding material for ferritic heat-resistant steel has a chemical composition containing, in mass %, C: 0.06 to 0.10%, Si: 0.1 to 0.4%, Mn: 0.3 to 0.7%, Co: 2.6 to 3.4%, Ni: 0.01 to 1.10%, Cr: 8.5 to 9.5%, W: 2.5 to 3.5%, Nb: 0.02 to 0.08%, V: 0.1 to 0.3%, Ta: 0.02 to 0.08%, B: 0.007 to 0.015%, N: 0.005 to 0.020%, with the balance being Fe and impurities, and satisfying Formula (1): 0.5?Cr+6Si+1.5W+11V+5Nb+10B?40C?30N?4Ni?2Co?2Mn?10.0??(1).Type: GrantFiled: December 16, 2016Date of Patent: August 17, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyuki Hirata, Kana Jotoku, Tomoaki Hamaguchi, Toshihide Ono, Katsuki Tanaka
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Patent number: 11021778Abstract: An austenitic stainless steel weld metal which has a chemical composition consisting of, by mass %, C: 0.05 to 0.11%, Si: 0.10 to 0.50%, Mn: 1.0 to 2.5%, P: 0.035% or less, S: 0.0030% or less, Co: 0.01 to 1.00%, Ni: 9.0 to 11.5%, Cr: 17.0 to 21.0%, Nb: 0.60 to 0.90%, Ta: 0.001 to 0.100%, N: 0.01 to 0.15%, Al: 0.030% or less, O: 0.020% or less, V: 0 to 0.10%, Ti: 0 to 0.10%, W: 0 to 0.50%, Mo: 0 to 0.50%, Cu: 0 to 0.50%, B: 0 to 0.005%, Ca: 0 to 0.010%, Mg: 0 to 0.010% and REM: 0 to 0.10%, with the balance being Fe and impurities, and satisfying [Nb?7.8×C?0.25].Type: GrantFiled: October 3, 2018Date of Patent: June 1, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyuki Hirata, Kana Jotoku, Katsuki Tanaka