Patents Assigned to Nihon Hyomen Kagaku Kabushiki Kaisha
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Patent number: 8980016Abstract: An acidic chromium-free solution for treating a metal surface containing: a vanadium cation source and/or a vanadyl cation source; an organic acid as an anion source; and at least one oxoacid as another anion source is provided. The oxoacid is selected from oxoacids of nitrogen, sulfur, phosphorus, boron, and chlorine. A metal component composed of, for example, aluminum or magnesium is brought into contact with the chromium-free solution to form a vanadium coating film of a surface of the metal component. A surface treating process using this chromium-free solution is useful for formation of a coating film having low corrosion resistance and low electric resistance.Type: GrantFiled: October 27, 2010Date of Patent: March 17, 2015Assignee: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Takaaki Sato, Misa Suzuki
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Publication number: 20110108430Abstract: A galvanization system comprising an alkaline galvanization bath, a positive electrode, and a negative electrode is provided. The alkaline galvanization bath comprises galvanizing solution including about 7 to about 60 g/l of Zn, about 70 to about 200 g/l of alkali hydroxide and about 0.01 to about 5 g/l of additives. The positive electrode is insoluble in the galvanizing solution, having an opposed surface to an object which is supposed to be set in the alkaline galvanization bath and galvanized. The opposed surface of the positive electrode is formed in a rectangular pattern having a side equal to or less than 30 mm or in a circular pattern having a diameter equal to or less than 30 mm. The galvanization system can produce a galvanization membrane of excellent appearance.Type: ApplicationFiled: November 12, 2009Publication date: May 12, 2011Applicant: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Kazuyuki Shinozaki, Yusaku Tazono, Katsuhiro Koike
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Publication number: 20110108431Abstract: A galvanization system comprising an alkaline galvanization bath, a positive electrode, and a negative electrode is provided. The alkaline galvanization bath comprises galvanizing solution including about 7 to about 60 g/l of Zn, about 70 to about 200 g/l of alkali hydroxide and about 0.01 to about 5 g/l of additives. The positive electrode is insoluble in the galvanizing solution, having an opposed surface to an object which is supposed to be set in the alkaline galvanization bath and galvanized. The opposed surface of the positive electrode is formed in a polygonal pattern having a side equal to or less than 30 mm, which connects arbitrary two apexes of the pattern, in a polygonal pattern having a vertical line equal to or less than 30 mm, drawn between an arbitrary apex and an arbitrary side of the pattern, or in a circular pattern having a diameter equal to or less than 30 mm. The galvanization system can produce a galvanization membrane of excellent appearance.Type: ApplicationFiled: December 14, 2009Publication date: May 12, 2011Applicants: Nihon Hyomen Kagaku Kabushiki Kaisha, Kidaseiko Kabushiki KaishaInventors: Kazuyuki Shinozaki, Yusaku Tazono, Katsuhiro Koike
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Publication number: 20110041958Abstract: An acidic chromium-free solution for treating a metal surface containing: a vanadium cation source and/or a vanadyl cation source; an organic acid as an anion source; and at least one oxoacid as another anion source is provided. The oxoacid is selected from oxoacids of nitrogen, sulfur, phosphorus, boron, and chlorine. A metal component composed of, for example, aluminum or magnesium is brought into contact with the chromium-free solution to form a vanadium coating film of a surface of the metal component. A surface treating process using this chromium-free solution is useful for formation of a coating film having low corrosion resistance and low electric resistance.Type: ApplicationFiled: October 27, 2010Publication date: February 24, 2011Applicant: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Takaaki Sato, Misa Suzuki
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Publication number: 20080254315Abstract: An acidic chromium-free solution for treating a metal surface containing: a vanadium cation source and/or a vanadyl cation source; an organic acid as an anion source; and at least one oxoacid as another anion source is provided. The oxoacid is selected from oxoacids of nitrogen, sulfur, phosphorus, boron, and chlorine. A metal component composed of, for example, aluminum or magnesium is brought into contact with the chromium-free solution to form a vanadium coating film of a surface of the metal component. A surface treating process using this chromium-free solution is useful for formation of a coating film having low corrosion resistance and low electric resistance.Type: ApplicationFiled: January 18, 2008Publication date: October 16, 2008Applicant: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Takaaki Sato, Misa Suzuki
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Patent number: 7030183Abstract: A plating solution containing zinc, an electrically conductive salt, an adsorbent, and at least one of mono- to hexavalent metal ions. A treatment using either a solution which contains, all per liter, 2–60 g Zn, 40–300 g caustic alkali, 0.01–50 g adsorbent, 0.002–10 g Fe, 0.002–10 g Co, 0.05–30 g Mn, 0.001–2 g Cu, 0.005–10 g Ni, 0.002–3 g of at least one chosen from among Mo, W, V, Ti, Al, Ca, Ba, and Sn, and 0.01–30 g aliphatic amine or aliphatic amine polymer or a solution which contains, all per liter, 2–40 g Zn, 40–170 g caustic alkali, 0.01–50 g adsorbent, either 0.001–3 g Fe and 0.001–3 g Co or 0.005–5 g Fe and 0.005–5 g Ni, and 0.01–30 g aliphatic amine or aliphatic amine polymer.Type: GrantFiled: September 9, 2002Date of Patent: April 18, 2006Assignee: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Masaaki Yamamuro, Mitsuomi Katori
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Publication number: 20030100638Abstract: A plating solution containing zinc, an electrically conductive salt, an adsorbent, and at least one of mono- to hexavalent metal ions. A treatment using either a solution which contains, all per liter, 2-60 g Zn, 40-300 g caustic alkali, 0.01-50 g adsorbent, 0.002-10 g Fe, 0.002-10 g Co, 0.05-30 g Mn, 0.001-2 g Cu, 0.005-10 g Ni, 0.002-3 g of at least one chosen from among Mo, W, V, Ti, Al, Ca, Ba, and Sn, and 0.01-30 g aliphatic amine or aliphatic amine polymer or a solution which contains, all per liter, 2-40 g Zn, 40-170 g caustic alkali, 0.01-50 g adsorbent, either 0.001-3 g Fe and 0.001-3 g Co or 0.005-5 g Fe and 0.005-5 g Ni, and 0.01-30 g aliphatic amine or aliphatic amine polymer.Type: ApplicationFiled: September 9, 2002Publication date: May 29, 2003Applicant: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Masaaki Yamamuro, Mitsuomi Katori
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Patent number: 6500886Abstract: A plating solution containing zinc, an electrically conductive salt, an adsorbent, and at least one of mono- to hexavalent metal ions. A treatment using either a solution which contains, all per liter, 2-60 g Zn, 40-300 g caustic alkali, 0.01-50 g adsorbent, 0.002-10 g Fe, 0.002-10 g Co, 0.05-30 g Mn, 0.001-2 g Cu, 0.005-10 g Ni, 0.002-3 g of at least one chosen from among Mo, W, V, Ti, Al, Ca, Ba, and Sn, and 0.01-30 g aliphatic amine or aliphatic amine polymer or a solution which contains, all per liter, 2-40 g Zn, 40-170 g caustic alkali, 0.01-50 g adsorbent, either 0.001-3 g Fe and 0.001-3 g Co or 0.005-5 g Fe and 0.005-5 g Ni, and 0.01-30 g aliphatic amine or aliphatic amine polymer.Type: GrantFiled: November 9, 2000Date of Patent: December 31, 2002Assignee: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Masaaki Yamamuro, Mitsuomi Katori
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Patent number: 6096140Abstract: A metallic surface treating solution characterized in that it is an aqueous solution at pH 0.1 to 6.5 comprising a source of at least one selected from the group consisting of Mo, W, V, Nb, Ta, Ti, Zr, Ce, Sr, and trivalent chromium, an oxidizing substance source, and an oxyacid or oxyacid salt of phosphorus or its anhydride, a surface treating method using the treating solution, and metals thereby treated on the surface.Type: GrantFiled: August 22, 1997Date of Patent: August 1, 2000Assignee: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Hideo Susa, Masaaki Yamamuro, Mitsuomi Katori
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Patent number: RE38285Abstract: A metallic surface treating solution characterized in that it is an aqueous solution at pH 0.1 to 6.5 comprising a source of at least one selected from the group consisting of Mo, W, V, Nb, Ta, Ti, Zr, Ce, Sr, and trivalent chromium, an oxidizing substance source, and an oxyacid or oxyacid salt of phosphorus or its anhydride, a surface treating method using the treating solution, and metals thereby treated on the surface.Type: GrantFiled: May 2, 2002Date of Patent: October 28, 2003Assignee: Nihon Hyomen Kagaku Kabushiki KaishaInventors: Hideo Susa, Masaaki Yamamuro, Mitsuomi Katori