Patents by Inventor Teruaki Yamada
Teruaki Yamada 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: 10023931Abstract: The present invention provides a method of production of hot dip galvannealed steel sheet with excellent workability compared with the Sendzimir method or non-oxidizing furnace method and further with excellent powdering or slidability, that is, a method of production of hot dip galvannealed steel sheet with excellent workability, powdering, and slidability characterized by processing a slab containing, by mass %, C: 0.01 to 0.12%, Mn: 0.05 to 0.6%, Si: 0.002 to 0.1%, P: 0.05% or less, S: 0.03% or less, sol. Al: 0.005 to 0.1%, and N: 0.01% or less and having a balance of Fe and unavoidable impurities by hot rolling, pickling, cold rolling, then annealing at 650 to 900° C., cooling to 250 to 450° C., holding at said temperature range for 120 seconds or more, then cooling to room temperature, pickling, preplating Ni or Ni—Fe without intermediate temper rolling, heating by 5° C./sec or more down to 430 to 500° C., galvanizing in a galvanization bath, wiping, then heating by a rate of temperature rise of 20° C.Type: GrantFiled: March 28, 2007Date of Patent: July 17, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Junji Haji, Kaoru Kawasaki, Kiyokazu Ishizuka, Teruaki Yamada
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Patent number: 8828569Abstract: Disclosed is a battery can for a storage battery, provided with a safety valve having a first and a second score groove portion is provided to inner and outer surface of can bottom, can body, or can lid. The first and the second score groove portion face each other, and have a first and a second score groove bottom portion, which have a radius of curvature R, respectively. The R is more than 0.20 mm and less than 1.20 mm, and a distance between the bottom portions is 0.045 to 0.150 mm. The portion, which has the safety valve, is constituted by a plated steel sheet having a steel sheet portion of C content is less than 0.040 mass %, S content is less than 0.020 mass %, and tensile strength TS is less than 400 MPa, and a plate layer formed on a surface of the steel sheet portion.Type: GrantFiled: May 1, 2012Date of Patent: September 9, 2014Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Teruaki Yamada, Kohji Miyoshi
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Publication number: 20140072841Abstract: Disclosed is a battery can for a storage battery, provided with a safety valve having a first and a second score groove portion is provided to inner and outer surface of can bottom, can body, or can lid. The first and the second score groove portion face each other, and have a first and a second score groove bottom portion, which have a radius of curvature R, respectively. The R is more than 0.20 mm and less than 1.20 mm, and a distance between the bottom portions is 0.045 to 0.150 mm. The portion, which has the safety valve, is constituted by a plated steel sheet having a steel sheet portion of C content is less than 0.040 mass %, S content is less than 0.020 mass %, and tensile strength TS is less than 400 MPa, and a plate layer formed on a surface of the steel sheet portion.Type: ApplicationFiled: May 1, 2012Publication date: March 13, 2014Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Teruaki Yamada, Kohji Miyoshi
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Publication number: 20090151820Abstract: The present invention provides a method of production of hot dip galvannealed steel sheet with excellent workability compared with the Sendzimir method or non-oxidizing furnace method and further with excellent powdering or slidability, that is, a method of production of hot dip galvannealed steel sheet with excellent workability, powdering, and slidability characterized by processing a slab containing, by mass %, C: 0.01 to 0.12%, Mn: 0.05 to 0.6%, Si: 0.002 to 0.1%, P: 0.05% or less, S: 0.03% or less, sol. Al: 0.005 to 0.1%, and N: 0.01% or less and having a balance of Fe and unavoidable impurities by hot rolling, pickling, cold rolling, then annealing at 650 to 900° C., cooling to 250 to 450° C., holding at said temperature range for 120 seconds or more, then cooling to room temperature, pickling, preplating Ni or Ni—Fe without intermediate temper rolling, heating by 5° C./sec or more down to 430 to 500° C., galvanizing in a galvanization bath, wiping, then heating by a rate of temperature rise of 20° C.Type: ApplicationFiled: March 28, 2007Publication date: June 18, 2009Inventors: Junji Haji, Kaoru Kawasaki, Kiyokazu Ishizuka, Teruaki Yamada
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Patent number: 6902843Abstract: The present invention provides a steel sheet material used for a positive electrode can and a positive electrode can for an alkaline manganese battery capable of improving the battery characteristics for an alkaline manganese battery, characterized in that the plated steel sheet for a positive electrode can for an alkaline manganese battery has Ni-based diffusion plating layer having on the top layer many small pinholes of diameter not greater than 1 ?m, i.e. submicron pinholes, formed on the surface of the steel sheet to be used as an internal surface of the can. Said submicron pinholes preferably have, as observed by SEM, diameter in the range of 0.1˜1 ?m and are present at density not less than 30 pcs/(10 ?m×10 ?m). The surface of the steel sheet to be used as an external surface of the can preferably has a Fe—Ni diffusion plating layer and a Ni plating layer that has been softened by recrystallization.Type: GrantFiled: January 9, 2002Date of Patent: June 7, 2005Assignee: Nippon Steel CorporationInventors: Kiyokazu Ishizuka, Teruaki Yamada, Michihiro Nouno
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Patent number: 6753095Abstract: The aim of the present invention is to provide a phosphate treated zinc coated steel sheet with excellent workability. A steel sheet coated with a zinc based alloy has a phosphate treated coating on the surface thereof. The phosphate treated coating comprises mainly granulated crystals, specifically, crystals in which the average ratio of the major axis to the minor axis is not less than 1.00 and not more than 2.90. Moreover, the method for producing the phosphate treated coating uses a phosphate treatment solution in which the amount of Mg ions is ≧6 g/l and the amount of Zn ions is ≧0.5 g/l, or a phosphate treatment solution in which the amount of Mg ions is ≧10 g/l, the amount of Zn ions is 0≦ and <0.5 g/l, and the amount of nitric acid ions is ≧40 g/l.Type: GrantFiled: February 11, 2002Date of Patent: June 22, 2004Assignee: Nippon Steel CorporationInventors: Hidetoshi Shindou, Kiyokazu Isizuka, Keiichi Sanada, Kazuo Takahashi, Teruaki Yamada, Daisuke Ito, Shigekazu Ooba
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Publication number: 20040076876Abstract: The present invention provides a steel sheet material used for a positive electrode can and a positive electrode can for an alkaline manganese battery capable of improving the battery characteristics for an alkaline manganese battery, characterized in that the plated steel sheet for a positive electrode can for an alkaline manganese battery has Ni-based diffusion plating layer having on the top layer many small pinholes of diameter not greater than 1 &mgr;m, i.e. submicron pinholes, formed on the surface of the steel sheet to be used as an internal surface of the can. Said submicron pinholes preferably have, as observed by SEM, diameter in the range of 0.1˜1 &mgr;m and are present at density not less than 30 pcs/(10 &mgr;m×10 &mgr;m). The surface of the steel sheet to be used as an external surface of the can preferably has a Fe—Ni diffusion plating layer and a Ni plating layer that has been softened by recrystallization.Type: ApplicationFiled: July 9, 2003Publication date: April 22, 2004Inventors: Kiyokazu Ishizuka, Teruaki Yamada, Nichihiro Nuono
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Patent number: 6720078Abstract: The present invention aims at provision of an organic composite galvanized steel sheet having its characteristics such as corrosion resistance and workability improved. Thus, the present invention provides an organic composite galvanized steel sheet that is formed by sequentially depositing on a surface of a steel sheet a galvanization layer, a zinc phosphate layer containing Mg, and an organic layer, and is characterized in that a value of Mg/P (weight ratio) in the zinc phosphate layer is 0.15 or larger and an amount of Mg contained in the zinc phosphate layer is 20 mg/m2 or more. Preferably, the zinc phosphate layer contains one or two or more of Ni, Mn, Co, Fe, Cu, Al, and Ca. In one preferred embodiment, the organic layer is formed as a composite layer containing an organic resin and one or two kinds or more of powder or colloid selected from SiO2, Al2O3, MgO, Fe2O3, Fe3O4, ZrO2, TiO2, and SnO2.Type: GrantFiled: September 23, 2002Date of Patent: April 13, 2004Assignee: Nippon Steel CorporationInventors: Kiyokazu Isizuka, Hidetoshi Shindou, Teruaki Yamada, Kimitaka Hayashi, Ikuo Kikuchi
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Patent number: 5095135Abstract: A process for the preparation of naphthalenecarboxylic acid esters in which a substituted naphthalene is oxidized with molecular oxygen in the presence of a heavy metal-based catalyst in a solvent comprising a lower aliphatic monocarboxylic acid to form a naphthalenecarboxylic acid and the resulting acid is then esterified. The esterified product is purified by washing, recrystallization, and distillation in that order. Heavy metals are recovered as carbonates from filtrates and washings obtained by seeparation of crude acid and ester products and by washing thereof.Type: GrantFiled: April 4, 1991Date of Patent: March 10, 1992Assignee: Sumikin Chemical Co., Ltd.Inventors: Teruaki Yamada, Kazuhiko Maeda, Ryohei Minami, Yukio Nagao, Kazuki Sugiura
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Patent number: 4960158Abstract: A zinc-plated steel sheet with an ageing resistance is produced from an Al-killed steel by hot dip type, continuous zinc plating including recrystallization and annealing, where after recrystallization and grain growth, the steel sheet is quenched at a cooling rate of 30.degree..about.250.degree. C/sec from 720.degree..about.600.degree. C. to 310.degree..about.200.degree. C.; after keeping the steel sheet at the same temperature for 0 to 15 seconds, the steel sheet is reheated to a molten zinc bath temperature; then the steel sheet is dipped into the molten zinc bath for zinc-plating; and then the steel sheet is cooled at a cooling rate of 250 to 5.degree. C./sec from that temperature to 350.degree. C.; and then the steel sheet is cooled at a specific average cooling rate in a temperature region of 350.degree. C. to 300.degree. C. and at a specific average cooling rate in a temperature region of from 300.degree. C. to 285.degree..about.220.degree. C.Type: GrantFiled: March 7, 1989Date of Patent: October 2, 1990Assignee: Nippon Steel CorporationInventors: Teruaki Yamada, Osamu Akisue, Toshiyasu Ukena, Masahiko Oda, Teruki Hayashida
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Patent number: 4931107Abstract: A cold rolled steel sheet having a good ageing resistance is produced by subjecting a cold rolled steel sheet to continuous annealing including recrystallization, grain growth, quenching, supercooling, reheating and overageing according to inclinatory cooling, where after the recrystallization and the grain growth, the steel sheet is quenched at a cooling rate of 50 to 250.degree. C./sec from 720-600.degree. C. to 200-310.degree. C.; after retaining the steel sheet at the same temperature for 0 to 15 seconds, the steel sheet is reheated by at least 40.degree. C. up to 320-400.degree. C.; then the steel sheet is retained at the same temperature or cooled at a rate of not more than 0.7.degree. C./sec including the time for retaining the steel sheet at the same temperature; and then the steel sheet is cooled at an average cooling rate of not more than 10.degree. C./sec in a temperature zone of higher than 350.degree. C., at a specific average cooling rate in a temperature zone of 350.degree. C. to 300.degree. C.Type: GrantFiled: February 24, 1989Date of Patent: June 5, 1990Assignee: Nippon Steel CorporationInventors: Teruaki Yamada, Toshiyasu Ukena, Osamu Akisue, Kenji Kawai, Yuuji Sano, Teruki Hayashida
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Patent number: 4925977Abstract: An improved method for the preparation of a naphthalene dicarboxylic acid by liquid-phase catalytic oxidation of a diisopropylnaphthalene in a lower fatty acid-based solvent is disclosed wherein a catalyst system comprising bromine and the heavy metals cerium, cobalt, and manganese is used. The cerium compound used as a cerium source for the catalyst can be recovered from crystals of the naphthalene dicarboxylic acid product by dissolving the crystals in an alkali solution and separating the cerium compound as insolubles from the solution.Type: GrantFiled: December 15, 1988Date of Patent: May 15, 1990Assignee: Sumikin Chemical Co., Ltd.Inventors: Teruaki Yamada, Yoshiji Doko, Kazuki Sugiura
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Patent number: 4551182Abstract: Disclosed is a process for producing titanium-containing cold rolled steel sheets and strips which can stand very severe press forming, which process comprising hot rolling, coiling at a temperature not lower than 700.degree. C., cold rolling and continuous annealing at a temperature, from 700.degree. to 900.degree. C., for 20 seconds to 2 minutes.Type: GrantFiled: October 27, 1982Date of Patent: November 5, 1985Assignee: Nippon Steel CorporationInventors: Osamu Akisue, Teruaki Yamada, Shigeru Ueda, Yoshikuni Tokunaga, Masato Yamada
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Patent number: 4315783Abstract: A method of producing a non-ageing cold rolled steel strip having excellent deep-drawability, with a r value of 1.5 or higher and ageing index of not higher than 3 kg/mm.sup.2 from an Al-killed steel with a lowered carbon content between 0.001 and 0.0035% and with no special additives such as titanium by a relatively low temperature coiling in the hot rolling, and a short-time continuous annealing without over-ageing, thus over-coming the disadvantages caused by a high temperature coiling and by additional over-ageing.Type: GrantFiled: October 17, 1979Date of Patent: February 16, 1982Assignee: Nippon Steel CorporationInventors: Osamu Akisue, Teruaki Yamada, Munetsugu Matsuo, Norimasa Uehara