Patents by Inventor Takashi Morohoshi
Takashi Morohoshi 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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Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
Patent number: 11566303Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0003% or greater and less than 0.0015% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R?(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.Type: GrantFiled: February 15, 2019Date of Patent: January 31, 2023Assignee: NIPPON STEEL CORPORATIONInventors: Takeshi Kubota, Takeaki Wakisaka, Masafumi Miyazaki, Takashi Morohoshi -
Publication number: 20230028362Abstract: There is provided a hot-stamped member or a steel sheet for hot stamping having a chemical composition including, in mass %, C: 0.25% or more and 0.55% or less, Si: 0.001% or more and 2.0% or less, Mn: 0.3% or more and 3.0% or less, P: 0.02% or less, S: 0.003% or less, Al: 0.005% or more and 1.0% or less, Cr: 0% or more and 1.0% or less, Mo: 0% or more and 1.0% or less, N: 0.02% or less, Ca: 0% or more and 0.0010% or less, B: 0.0005% or more and 0.01% or less, one or two or more selected from the group consisting of Ti: 0.005% or more and 0.5% or less, Nb: 0.005% or more and 0.5% or less, V: 0.005% or more and 0.5% or less, and Zr: 0.005% or more and 0.5% or less, and Ni+Cu+Sn: 0% or more and 2% or less, and a remainder consisting of Fe and impurities.Type: ApplicationFiled: November 25, 2020Publication date: January 26, 2023Applicant: NIPPON STEEL CORPORATIONInventors: Kazuhisa KUSUMI, Katsuhiro FUCHIGAMI, Takashi ARAMAKI, Hideaki IRIKAWA, Haruhiko EGUCHI, Takahisa HONDA, Takashi MOROHOSHI
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Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
Patent number: 11469018Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: greater than 0.0100% and not greater than 0.0250% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.Type: GrantFiled: February 15, 2019Date of Patent: October 11, 2022Assignee: NIPPON STEEL CORPORATIONInventors: Takeshi Kubota, Takeaki Wakisaka, Masafumi Miyazaki, Takashi Morohoshi -
Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
Patent number: 11459632Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0015% to 0.0100% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.Type: GrantFiled: February 15, 2019Date of Patent: October 4, 2022Assignee: NIPPON STEEL CORPORATIONInventors: Takeshi Kubota, Takeaki Wakisaka, Takashi Morohoshi, Masafumi Miyazaki -
Patent number: 11053574Abstract: A non-oriented electrical steel sheet according to an aspect of the present invention contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.2% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, one or more of La, Ce, Pr, and Nd: 0.0005% to 0.0200% in total, Ca: 0.0005% to 0.0100%, Ti: 0.0005% to 0.0100%, Sn: 0% to 0.10%, Sb: 0% to 0.10%, Mg: 0% to 0.0100%, and a remainder including Fe and impurities, in which Si?0.5×Mn: 2.0% or more, and Si+0.5×Mn: 3.8% or more.Type: GrantFiled: January 16, 2018Date of Patent: July 6, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyoshi Yashiki, Yoshiaki Natori, Kazutoshi Takeda, Susumu Mukawa, Takuya Matsumoto, Koji Fujita, Takashi Morohoshi, Masafumi Miyazaki
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NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET
Publication number: 20210172036Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0015% to 0.0100% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.Type: ApplicationFiled: February 15, 2019Publication date: June 10, 2021Applicant: NIPPON STEEL CORPORATIONInventors: Takeshi KUBOTA, Takeaki WAKISAKA, Takashi MOROHOSHI, Masafumi MIYAZAKI -
Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
Patent number: 11021771Abstract: A non-oriented electrical steel sheet contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.0% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, O: 0.0110% to 0.0350%, Sn: 0% to 0.050%, Sb: 0% to 0.050%, Ti: more than 0% and 0.0050% or less, and a remainder including Fe and impurities, in which Sn+Sb: 0.050% or less, Si?0.5×Mn: 2.0% or more, and an O content in a sheet thickness central portion excluding a surface layer portion which is a range from a front surface and a rear surface to a position of 10 ?m in a depth direction is less than 0.0100%.Type: GrantFiled: January 16, 2018Date of Patent: June 1, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyoshi Yashiki, Yoshiaki Natori, Kazutoshi Takeda, Susumu Mukawa, Takuya Matsumoto, Koji Fujita, Takashi Morohoshi, Masafumi Miyazaki -
Patent number: 10995393Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.Type: GrantFiled: June 2, 2017Date of Patent: May 4, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
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Patent number: 10991494Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.Type: GrantFiled: June 2, 2017Date of Patent: April 27, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
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Patent number: 10968503Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 10% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.Type: GrantFiled: June 2, 2017Date of Patent: April 6, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
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NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET
Publication number: 20210062286Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0003% or greater and less than 0.0015% in total, a parameter Q represented by Q=[Si]+2x[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R?(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.Type: ApplicationFiled: February 15, 2019Publication date: March 4, 2021Applicant: NIPPON STEEL CORPORATIONInventors: Takeshi KUBOTA, Takeaki WAKISAKA, Masafumi MIYAZAKI, Takashi MOROHOSHI -
NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET
Publication number: 20200350104Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: greater than 0.0100% and not greater than 0.0250% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.Type: ApplicationFiled: February 15, 2019Publication date: November 5, 2020Applicant: NIPPON STEEL CORPORATIONInventors: Takeshi KUBOTA, Takeaki WAKISAKA, Masafumi MIYAZAKI, Takashi MOROHOSHI -
Publication number: 20200224296Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.Type: ApplicationFiled: June 2, 2017Publication date: July 16, 2020Applicant: NIPPON STEEL CORPORATIONInventors: Takeshi KUBOTA, Takashi MOROHOSHI, Masafumi MIYAZAKI
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Publication number: 20200152363Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.Type: ApplicationFiled: June 2, 2017Publication date: May 14, 2020Applicant: NIPPON STEEL CORPORATIONInventors: Takeshi KUBOTA, Takashi MOROHOSHI, Masafumi MIYAZAKI
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Publication number: 20200017942Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]?[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 10% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 ?m to 100 ?m.Type: ApplicationFiled: June 2, 2017Publication date: January 16, 2020Applicant: NIPPON STEEL CORPORATIONInventors: Takeshi KUBOTA, Takashi MOROHOSHI, Masafumi MIYAZAKI
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Publication number: 20190316239Abstract: A non-oriented electrical steel sheet according to an aspect of the present invention contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.2% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, one or more of La, Ce, Pr, and Nd: 0.0005% to 0.0200% in total, Ca: 0.0005% to 0.0100%, Ti: 0.0005% to 0.0100%, Sn: 0% to 0.10%, Sb: 0% to 0.10%, Mg: 0% to 0.0100%, and a remainder including Fe and impurities, in which Si?0.5×Mn: 2.0% or more, and Si+0.5×Mn: 3.8% or more.Type: ApplicationFiled: January 16, 2018Publication date: October 17, 2019Applicant: NIPPON STEEL CORPORATIONInventors: Hiroyoshi YASHIKI, Yoshiaki NATORI, Kazutoshi TAKEDA, Susumu MUKAWA, Takuya MATSUMOTO, Koji FUJITA, Takashi MOROHOSHI, Masafumi MIYAZAKI
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NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET
Publication number: 20190316221Abstract: A non-oriented electrical steel sheet contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.0% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, O: 0.0110% to 0.0350%, Sn: 0% to 0.050%, Sb: 0% to 0.050%, Ti: more than 0% and 0.0050% or less, and a remainder including Fe and impurities, in which Sn+Sb: 0.050% or less, Si?0.5×Mn: 2.0% or more, and an O content in a sheet thickness central portion excluding a surface layer portion which is a range from a front surface and a rear surface to a position of 10 ?m in a depth direction is less than 0.0100%.Type: ApplicationFiled: January 16, 2018Publication date: October 17, 2019Applicant: NIPPON STEEL CORPORATIONInventors: Hiroyoshi YASHIKI, Yoshiaki NATORI, Kazutoshi TAKEDA, Susumu MUKAWA, Takuya MATSUMOTO, Koji FUJITA, Takashi MOROHOSHI, Masafumi MIYAZAKI -
Patent number: 10337092Abstract: A steel sheet according to the present invention includes a predetermined chemical composition, in which amounts of each elements by mass % in the chemical composition satisfy both of expression “0.3000?{Ca/40.88+(REM/140)/2}/(S/32.07)” and expression “Ca?0.0058?0.0050×C”, and a number density of carbonitrides including Ti which exists independently and has a long side of 5 ?m or more is limited to 5 pieces/mm2 or less.Type: GrantFiled: April 24, 2014Date of Patent: July 2, 2019Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Takashi Morohoshi, Takashi Aramaki, Masafumi Zeze
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Publication number: 20160076123Abstract: A steel sheet according to the present invention includes a predetermined chemical composition, in which amounts of each elements by mass % in the chemical composition satisfy both of expression “0.3000?{Ca/40.88+(REM/140)/2}/(S/32.07)” and expression “Ca?0.0058?0.0050×C”, and a number density of carbonitrides including Ti which exists independently and has a long side of 5 ?m or more is limited to 5 pieces/mm2 or less.Type: ApplicationFiled: April 24, 2014Publication date: March 17, 2016Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Takashi MOROHOSHI, Takashi ARAMAKI, Masafumi ZEZE
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Patent number: 9127409Abstract: In the rail, 95% or more of a structure in a head surface section, which is a range from surfaces of head corner sections and a head top section of the rail as a starting point to a depth of 20 mm, is a pearlite or bainite structure and the structure contains 20 to 200 MnS-based sulfides formed around an Al-based oxide as a nucleus and having a grain size in a range of 1 ?m to 10 ?m per square millimeter of an area to be inspected on a horizontal cross section of the rail.Type: GrantFiled: April 23, 2013Date of Patent: September 8, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Masaharu Ueda, Teruhisa Miyazaki, Takeshi Yamamoto, Takashi Morohoshi