Patents by Inventor Masayoshi Suehiro
Masayoshi Suehiro 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: 8979104Abstract: A structure (10) for a front section of a vehicle body in a vehicle body (1) comprising a front chamber (3) disposed on the forward side of a vehicle interior (2) is provided with the following: a pair of front side members (11), located within the front chamber, that extend in the longitudinal direction of the vehicle body; a pair of strut towers (16) disposed on either side in the width direction of the front chamber and within which front wheel suspensions are disposed; and reinforcement members (20) that link the top of each strut tower with the front side members that face the strut towers, and that extend between the strut towers and the front side members. This configuration allows a structure for a front section of a vehicle body to be provided that can efficiently improve the rigidity of the vehicle body of an automobile against torsion and against lateral bending, and that can efficiently reduce the weight of the vehicle body by means of thickness reduction using a high-strength steel plate.Type: GrantFiled: March 8, 2012Date of Patent: March 17, 2015Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Toshiyuki Niwa, Masayoshi Suehiro, Atsushi Seto, Takeshi Kawachi, Masaaki Mizumura, Seiichi Daimaru, Kaoru Kawasaki, Hatsuhiko Oikawa, Yasunobu Miyazaki, Tatsuya Sakiyama, Nobutaka Shimizu, Naoki Yoshinaga
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Publication number: 20140054872Abstract: A structure (10) for a front section of a vehicle body in a vehicle body (1) comprising a front chamber (3) disposed on the forward side of a vehicle interior (2) is provided with the following: a pair of front side members (11), located within the front chamber, that extend in the longitudinal direction of the vehicle body; a pair of strut towers (16) disposed on either side in the width direction of the front chamber and within which front wheel suspensions are disposed; and reinforcement members (20) that link the top of each strut tower with the front side members that face the strut towers, and that extend between the strut towers and the front side members. This configuration allows a structure for a front section of a vehicle body to be provided that can efficiently improve the rigidity of the vehicle body of an automobile against torsion and against lateral bending, and that can efficiently reduce the weight of the vehicle body by means of thickness reduction using a high-strength steel plate.Type: ApplicationFiled: March 8, 2012Publication date: February 27, 2014Inventors: Toshiyuki Niwa, Masayoshi Suehiro, Atsushi Seto, Takeshi Kawachi, Masaaki Mizumura, Seiichi Daimaru, Kaoru Kawasaki, Hatsuhiko Oikawa, Yasunobu Miyazaki, Tatsuya Sakiyama, Nobutaka Shimizu, Naoki Yoshinaga
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Patent number: 7736449Abstract: The present invention stably provides a high-strength hot-dip galvanized steel sheet having a high tensile strength and no non-plated portions and being excellent in workability and surface properties even when the employed equipment has only a reduction annealing furnace and a steel sheet containing relatively large amounts of Si, Mn and Al that are regarded as likely to cause non-plated portions is used as the substrate.Type: GrantFiled: October 24, 2007Date of Patent: June 15, 2010Assignee: Nippon Steel CorporationInventors: Yoshihisa Takada, Masayoshi Suehiro, Masao Kurosaki, Hidekuni Murakami, Hiroyasu Fujii, Haruhiko Eguchi, Hisaaki Sato
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Patent number: 7695826Abstract: The present invention provides an alloyed molten zinc plated steel sheet having an area of the Fe and Zn alloy phase in the unformed parts in the plating layer of less than 10% of the area of the steel sheet as a whole and superior in strength and shapeability and a method of producing this alloyed molten zinc plating steel sheet by a continuous zinc plating production system which enables production at a low cost without modification of the system or addition of steps, said alloyed molten zinc plated steel sheet characterized by comprising a steel sheet including C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 2.5%, the balance comprised of Fe and unavoidable impurities, having on its surface a Zn alloy plating layer comprised of Fe in a concentration of 7 to 15 wt %, Al in a concentration of 0.Type: GrantFiled: March 30, 2004Date of Patent: April 13, 2010Assignees: Nippon Steel Corporation, USINORInventors: Koki Tanaka, Yoichi Ikematsu, Shunichi Hayashi, Hideaki Sawada, Akira Takahashi, Kazuhiko Honda, Masayoshi Suehiro, Yoshihisa Takada
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Patent number: 7687152Abstract: A molten zinc plated steel sheet superior in plating bondability and provided with both strength and shapeability is provided and a method of producing this molten zinc plating steel sheet by a continuous zinc plating production system which enables production at a low cost without modification of the system or addition of steps is provided, said molten zinc plated steel sheet characterized by comprising, by wt %, a steel sheet including C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 2.5%, the balance comprised of Fe and unavoidable impurities, having on its surface a Zn plating layer containing Al: 0.01 to 1% and the balance of Zn and unavoidable impurities and containing inside the steel sheet within 2 ?m from the interface of said plating layer and steel sheet oxide particles of at least one type of oxide selected from an Al oxide, Si oxide, Mn oxide, or complex oxide comprised of at least two of Al, Si, and Mn.Type: GrantFiled: March 30, 2004Date of Patent: March 30, 2010Assignees: Nippon Steel Corporation, USINORInventors: Yoichi Ikematsu, Koki Tanaka, Shunichi Hayashi, Hideaki Sawada, Akira Takahashi, Kazuhiko Honda, Masayoshi Suehiro, Yoshihisa Takada
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Publication number: 20080053576Abstract: The present invention stably provides a high-strength hot-dip galvanized steel sheet having a high tensile strength and no non-plated portions and being excellent in workability and surface properties even when the employed equipment has only a reduction annealing furnace and a steel sheet containing relatively large amounts of Si, Mn and Al that are regarded as likely to cause non-plated portions is used as the substrate.Type: ApplicationFiled: October 24, 2007Publication date: March 6, 2008Applicant: Nippon Steel CorporationInventors: Yoshihisa Takada, Masayoshi Suehiro, Masao Kurosaki, Hidekuni Murakami, Hiroyasu Fujii, Haruhiko Eguchi, Hisaaki Sato
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Patent number: 7294412Abstract: The present invention stably provides a high-strength hot-dip galvanized steel sheet having a high tensile strength and no non-plated portions and being excellent in workability and surface properties even when the employed equipment has only a reduction annealing furnace and a steel sheet containing relatively large amounts of Si, Mn and Al that are regarded as likely to cause non-plated portions is used as the substrate.Type: GrantFiled: January 15, 2004Date of Patent: November 13, 2007Assignee: Nippon Steel CorporationInventors: Yoshihisa Takada, Masayoshi Suehiro, Masao Kurosaki, Hidekuni Murakami, Hiroyasu Fujii, Haruhiko Eguchi, Hisaaki Sato
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Publication number: 20060292391Abstract: A molten zinc plated steel sheet superior in plating bondability and provided with both strength and shapeability is provided and a method of producing this molten zinc plating steel sheet by a continuous zinc plating production system which enables production at a low cost without modification of the system or addition of steps is provided, said molten zinc plated steel sheet characterized by comprising, by wt %, a steel sheet including C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 2.5%, the balance comprised of Fe and unavoidable impurities, having on its surface a Zn plating layer containing Al: 0.01 to 1% and the balance of Zn and unavoidable impurities and containing inside the steel sheet within 2 ?m from the interface of said plating layer and steel sheet oxide particles of at least one type of oxide selected from an Al oxide, Si oxide, Mn oxide, or complex oxide comprised of at least two of Al, Si, and Mn.Type: ApplicationFiled: March 30, 2004Publication date: December 28, 2006Inventors: Yoichi Ikematsu, Koki Tanaka, Shunichi Hayashi, Hideaki Sawada, Akira Takahashi, Kazuhiko Honda, Masayoshi Suehiro, Yoshihisa Takada
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Publication number: 20060269776Abstract: The present invention provides an alloyed molten zinc plated steel sheet having an area of the Fe and Zn alloy phase in the unformed parts in the plating layer of less than 10% of the area of the steel sheet as a whole and superior in strength and shapeability and a method of producing this alloyed molten zinc plating steel sheet by a continuous zinc plating production system which enables production at a low cost without modification of the system or addition of steps, said alloyed molten zinc plated steel sheet characterized by comprising a steel sheet including C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 2.5%, the balance comprised of Fe and unavoidable impurities, having on its surface a Zn alloy plating layer comprised of Fe in a concentration of 7 to 15 wt %, Al in a concentration of 0.Type: ApplicationFiled: March 30, 2004Publication date: November 30, 2006Inventors: Koki Tanaka, Yoichi Ikematsu, Shunichi Hayashi, Hideaki Sawada, Akira Takahashi, Kazuhiko Honda, Masayoshi Suehiro, Yoshihisa Takada
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Publication number: 20060230800Abstract: A metal band having metallic appearance and being excellent in forming stability is provided. The metal band includes a coating film containing not less than 20 mass % in the coated and dried state, of filler of aluminum or aluminum alloys on the side thereof corresponding to the outside of a can. The metal band also has a resin-rich portion containing not more than approximately 5 mass % of the filler, approximately 0.1 to 20 ?m in thickness in the coated surface far from the metal strip surface, seamlessly-formed can bodies made of such strips. Methods for manufacturing such strips and can bodies are also provided.Type: ApplicationFiled: July 7, 2003Publication date: October 19, 2006Inventors: Toru Chichiki, Masayoshi Suehiro, Hiroshi Nishida, Osamu Miyamae, Hirokazu Yokoya, Takaharu Kataoka
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Publication number: 20060124907Abstract: The present invention stably provides a high-strength hot-dip galvanized steel sheet having a high tensile strength and no non-plated portions and being excellent in workability and surface properties even when the employed equipment has only a reduction annealing furnace and a steel sheet containing relatively large amounts of Si, Mn and Al that are regarded as likely to cause non-plated portions is used as the substrate.Type: ApplicationFiled: January 15, 2004Publication date: June 15, 2006Inventors: Yoshihisa Takada, Masayoshi Suehiro, Masao Kurosaki, Hidekuni Murakami, Hiroyasu Fujii, Haruhiko Eguchi, Hisaaki Sato
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Patent number: 6911268Abstract: Disclosed are a high strength hot-dip galvanized or galvannealed steel sheet, which has improved press formability and plating adhesion and is useful as a member for automobile, building, electric or other members, and a process for producing the same. This high strength hot-dip galvanized or galvannealed steel sheet comprises: (a) a steel sheet substrate comprising, by weight, carbon (C): 0.05 to 0.2%, silicon (Si): 0.2 to 2.0%, manganese (Mn): 0.2 to 2.5%, and aluminum (Al): 0.01 to 1.5%, the silicon and the aluminum having a mutual relationship represented by formula 0.4(%)?Si+0.8 Al (%)?2.0(%), the steel sheet substrate further comprising at least one member selected from the group consisting of (i) 0.003 to 1.0% of tin (Sn), (ii) 0.005 to 1.0% in total of at least one member selected from antimony (Sb), bismuth (Bi), and selenium (Se), (iii) 0.005 to 1.0% in total of at least one member selected from beryllium (Be), magnesium (Mg), calcium (Ca), and zirconium (Zr), and (iv) 0.005 to 1.Type: GrantFiled: December 27, 2001Date of Patent: June 28, 2005Assignee: Nippon Steel CorporationInventors: Yoshihisa Takada, Masayoshi Suehiro, Takehide Senuma
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Publication number: 20040055667Abstract: Disclosed are a high strength hot-dip galvanized or galvannealed steel sheet, which has improved press formability and plating adhesion and is useful as a member for automobile, building, electric or other members, and a process for producing the same.Type: ApplicationFiled: June 27, 2003Publication date: March 25, 2004Inventors: Yoshihisa Takada, Masayoshi Suehiro, Takehide Senuma
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Patent number: 6562152Abstract: A TRIP-type high strength steel plate having good workability is provided which, while reducing the amount of alloying elements added which increase the production cost, ensures a contemplated retained austenite structure, has good adhesion to zinc plating, and can also be applied to highly corrosion resistant surface treated steel plates. The high strength steel plate having improved workability and plating adhesion is such that a high concentration, i.e., 0.03 to 2.0% by weight, of nitrogen is incorporated, the contents of silicon and aluminum, which form nitride, are preferably regulated respectively to not more than 0.5% by weight and not more than 0.3% by weight, and, in addition, calcium, sodium, magnesium, etc. are optionally added to control the formation of iron nitride, whereby the volume fraction of the retained austenite phase in the metal structure is regulated to 3 to 20% by weight.Type: GrantFiled: June 27, 2001Date of Patent: May 13, 2003Assignee: Nippon Steel CorporationInventors: Hidekuni Murakami, Yoshihisa Takada, Masayoshi Suehiro
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Patent number: 6544355Abstract: A vitreous enamel steel sheet produced by a continuous casting, excellent in formability, bubbling and black spot resistance and adhesiveness, which comprises, in terms of mass %, 0.002% or less of C, 0.05 to 0.2% of Mn, 0.01% or less of Si, 0.004% or less of N, 0.015 to 0.05% of 0, less than 0.01% of P, 0.025% or less of S, 0.02 to 0.04% of Cu, 0.03 to 0.05% of Nb, and 0.03 to 0.07% of V, satisfying the inequality: 0.2>Mn (%)−2.0·O (%)+0.8·V (%)+0.5·Nb (%), and the balance consisting of Fe and unavoidable impurities, and a method for producing the same.Type: GrantFiled: March 12, 2001Date of Patent: April 8, 2003Assignee: Nippon Steel CorporationInventors: Satoshi Nishimura, Masayoshi Suehiro, Shiro Sanagi
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Patent number: 6517955Abstract: The invention relates to a high strength hot-dip galvanized and galvannealed steel sheets with excellent drawability for press forming and excellent plating adhesion that is useful as a member for automobiles, construction, electric devices and the like, and to a process for its manufacture. According to an embodiment of the invention, the steel sheet contains in terms of weight percent, C: 0.05-0.2%, Si: 0.2-2.0%, Mn: 0.2-2.5%, Al: 0.01-1.5%, Ni: 0.2-5.0%, P: <0.03% and S: <0.02%, the relationship between Si and Al being such that 0.4(%)≦Si+0.8 Al(%)≦2.0% and the remainder consisting of Fe and unavoidable impurities, the volume percentage of the retained austenite is 2-20% and the steel sheet surface wherein the relationship between the Ni and Si, Al in 0.5 &mgr;m of the steel sheet surface layer is such that Ni(%)≦¼ Si+⅓Al(%), has a Zn plating layer comprising Al: ≦1% with the remainder Zn and unavoidable impurities.Type: GrantFiled: December 29, 2000Date of Patent: February 11, 2003Assignee: Nippon Steel CorporationInventors: Yoshihisa Takada, Masayoshi Suehiro
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Patent number: 6427860Abstract: A can lid made of a metal sheet having a resin coating on at least one surface thereof and superior in can openability, having an outer peripheral flat portion and an inner peripheral flat portion straddling a score line further having an outer bead and inner bead at the sides of the outer peripheral flat portion and the inner peripheral flat portion opposite to the score line, and having a cross-section where the score line becomes gradually thinner from the thicknesses of the outer peripheral flat portion and the inner peripheral flat portion and a process for forming the same.Type: GrantFiled: March 29, 2000Date of Patent: August 6, 2002Assignee: Nippon Steel CorporationInventors: Hiroshi Nishida, Hidekuni Murakami, Masayoshi Suehiro, Shoji Nosaka
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Publication number: 20020017342Abstract: A TRIP-type high strength steel plate having good workability is provided which, while reducing the amount of alloying elements added which increase the production cost, ensures a contemplated retained austenite structure, has good adhesion to zinc plating, and can also be applied to highly corrosion resistant surface treated steel plates. The high strength steel plate having improved workability and plating adhesion is such that a high concentration, i.e., 0.03 to 2.0% by weight, of nitrogen is incorporated, the contents of silicon and aluminum, which form nitride, are preferably regulated respectively to not more than 0.5% by weight and not more than 0.3% by weight, and, in addition, calcium, sodium, magnesium, etc. are optionally added to control the formation of iron nitride, whereby the volume fraction of the retained austenite phase in the metal structure is regulated to 3 to 20% by weight.Type: ApplicationFiled: June 27, 2001Publication date: February 14, 2002Inventors: Hidekuni Murakami, Yoshihisa Takada, Masayoshi Suehiro
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Patent number: 5954896Abstract: According to the present invention, an ultra low carbon steel with Nb, Ti, or Nb-Ti added thereto is used as a material, and (% S as MnS)/(total S content) is regulated to not more than 0.2 with (% C as carbosulfide)/(total C content) being regulating to not more than 0.7, thereby efficiently precipitating carbosulfide in a .gamma. temperature region during hot rolling and thus reducing the amount of C in solid solution to ensure the homogeneity of the material over the whole length of a coil and to markedly improve the workability.Type: GrantFiled: October 18, 1996Date of Patent: September 21, 1999Assignee: Nippon Steel CorporationInventors: Kazuo Koyama, Masayoshi Suehiro, Naoki Yoshinaga, Natsuko Hashimoto
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Patent number: 5578143Abstract: (Object) IF-based, continuously cast slab essentially freed from defects such as surface defects, difficult production and poor strength, etc. of the product that the IF-based sheet steels have; sheet steels and a process for producing the same are provided.(Structure) A continuously cast slab of extremely low carbon steel comprising not more than 1.5% by mass of Si, not more than 2.0% by mass of Mn, not ore than 0.15% by mass of P, 0.01-0.15% by mass of Al, and not more than 0.0050% by mass of N, where the surface layer further contains 0.01-0.08% by mass of C existing as a cementite and the inner layer further contains not more than 0.0050% by mass of C, and at least one of 0.02-0.10% by mass of Ti, 0.01-0.10% by mass of Nb, 0.02-0.10% by mass of V and 0.03-0.10% by mass of Zr, the carbon existing substantially as carbides of these elements, preferably both the surface layer and the inner layer further contain 0.0001-0.Type: GrantFiled: July 21, 1995Date of Patent: November 26, 1996Assignee: Nippon Steel CorporationInventors: Kazuo Koyama, Eiichi Takeuchi, Masayoshi Suehiro