Patents by Inventor Junnosuke Sekiguchi
Junnosuke Sekiguchi 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: 9234292Abstract: A nickel-iron alloy plating solution which can suppress, in a nickel-iron alloy plating solution containing divalent iron ions and divalent nickel ions, oxidation of divalent iron ions to trivalent iron ions and can prevent the occurrence of the precipitation of iron (III) hydroxide to allow stable continuous operation and also to provide a nickel-iron alloy plating solution which allows production of a soft magnetic film which is stable in composition. The nickel-iron alloy plating solution of the present invention is characterized in that it comprises divalent iron ions, divalent nickel ions and a hydroxylamine salt and has a pH of 3.0 or lower.Type: GrantFiled: October 25, 2010Date of Patent: January 12, 2016Assignee: JX NIPPON MINING & METALS CORPORATIONInventors: Masaomi Murakami, Junnosuke Sekiguchi
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Patent number: 9034154Abstract: A sputtering target with low generation of particles in which oxides, carbides, nitrides, borides, intermetallic compounds, carbonitrides, and other substances without ductility exist in a matrix phase made of a highly ductile substance at a volume ratio of 1 to 50%, wherein a highly ductile and conductive metal coating layer is formed on an outermost surface of the target. Provided are a sputtering target capable of improving the target surface in which numerous substances without ductility exist and preventing or inhibiting the generation of nodules and particles during sputtering, and a method of producing such a sputtering target.Type: GrantFiled: February 24, 2010Date of Patent: May 19, 2015Assignee: JX Nippon Mining & Metals CorporationInventors: Yuichiro Nakamura, Akira Hisano, Junnosuke Sekiguchi
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Publication number: 20140158546Abstract: An electrolytic copper plating solution for filling for forming microwiring for ULSI, is characterized in that it has a pH of from 1.8 to 3.0. The electrolytic copper plating solution preferably contains a saturated carboxylic acid having from 1 to 4 carbon atoms at a concentration from 0.01 to 2.0 mol/L.Type: ApplicationFiled: December 10, 2013Publication date: June 12, 2014Inventors: Junnosuke SEKIGUCHI, Hirofumi TAKAHASHI, Akihiro AIBA
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Patent number: 8736057Abstract: A substrate having, on a base material, a barrier film for preventing copper diffusion containing one or more metal elements selected from tungsten, molybdenum and niobium, a metal element having a catalytic function in electroless plating such as platinum, gold, silver and palladium, and nitrogen contained in the form of a nitride of the aforementioned one or more metal elements selected from tungsten, molybdenum and niobium. The barrier film for preventing copper diffusion is manufactured by sputtering in a nitrogen atmosphere using a target containing one or more metal elements selected from tungsten, molybdenum and niobium and the aforementioned metal element having a catalytic function in electroless plating.Type: GrantFiled: November 26, 2008Date of Patent: May 27, 2014Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Junichi Ito, Atsushi Yabe, Junnosuke Sekiguchi, Toru Imori
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Patent number: 8734579Abstract: An aqueous solution containing divalent iron ions having improved storage stability such that the oxidation over time of divalent iron ions in the aqueous solution containing divalent iron ions to trivalent iron ions is suppressed and the occurrence of the precipitation of iron (III) hydroxide is prevented for long periods. The aqueous solution contains divalent iron ions having improved storage stability characterized in that it contains divalent iron ions and a hydroxylamine salt as a reducing agent and has a pH of 3.0 or lower. The pH is preferably 2.2 or lower and more preferably 1.2 or lower.Type: GrantFiled: October 25, 2010Date of Patent: May 27, 2014Assignee: JX Nippon Mining & Metals CorporationInventors: Masaomi Murakami, Junnosuke Sekiguchi
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Publication number: 20130139648Abstract: A high purity platinum recovery method including the steps of dissolving a platinum alloy containing ruthenium in aqua regia and eliminating residue, thereafter causing acid with platinum dissolved therein and an ammonium chloride solution to react so as to deposit chloroplatinic ammonium salt, and reducing the chloroplatinic ammonium salt to obtain a platinum sponge. The method is characterized in that acid with platinum dissolved therein and the ammonium chloride solution are caused to react at a temperature of 40° C. or higher.Type: ApplicationFiled: June 21, 2011Publication date: June 6, 2013Applicant: JX Nippon Mining & Metals CorporationInventor: Junnosuke Sekiguchi
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Patent number: 8404035Abstract: An electroless copper plating solution that is favorable to improve the adhesion of a plating film and realizes uniform plating at a low temperature is characterized by containing a water-soluble nitrogen-containing polymer in an electroless copper plating solution, and preferably the above-mentioned electroless copper plating solution contains glyoxylic acid and phosphinic acid as reducing agents. The water-soluble nitrogen-containing polymer is preferably a polyacrylamide or a polyethyleneimine and, preferably, its weight average molecular weight (Mw) is at least 100,000 and Mw/Mn is 10.0 or less.Type: GrantFiled: July 30, 2004Date of Patent: March 26, 2013Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Atsushi Yabe, Junnosuke Sekiguchi, Toru Imori, Yoshihisa Fujihira
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Patent number: 8395264Abstract: A layer having a barrier function and catalytic power and excelling in formation uniformity and coverage of an ultrathin film, a pretreatment technique making it possible to form an ultrafine wiring and form a thin seed layer of uniform film thickness and a substrate including a thin seed layer formed with a uniform film thickness by electroless plating by using the aforementioned technique. A substrate in which an alloy film of one or more metal elements, having a barrier function and a metal element or metal elements, having catalytic power with respect to electroless plating is formed by chemical vapor deposition (CVD) on a base to a film thickness of 0.5 nm to 5 nm with a content ratio of the one or more metal element having a barrier function from 5 to 90 at. %.Type: GrantFiled: January 28, 2010Date of Patent: March 12, 2013Assignee: JX Nippon Mining & Metals CorporationInventors: Junichi Ito, Junnosuke Sekiguchi, Toru Imori
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Patent number: 8394508Abstract: A plated article has an alloy thin film formed on a substrate and having a catalytically active metal (A) for electroless plating and a metal (B) capable of undergoing displacement plating with a metal ion contained in an electroless plating solution, and a metal thin film formed on the alloy thin film by electroless displacement and reduction plating. The alloy thin film of the catalytically active metal (A) and the metal (B) capable of displacement plating has a composition comprising 5 at % to 40 at % of the metal (A). The metal thin film formed by electroless displacement and reduction plating is a metal thin film having a thickness no greater than 10 nm and a resistivity no greater than 10 ??·cm. Preferably, the metal (B) has a barrier function with respect to a metal of the metal thin film.Type: GrantFiled: July 18, 2008Date of Patent: March 12, 2013Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Atsushi Yabe, Junichi Ito, Yoshiyuki Hisumi, Junnosuke Sekiguchi, Toru Imori
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Patent number: 8390123Abstract: A ULSI micro-interconnect member having a substrate and a ULSI micro-interconnect formed on the substrate, wherein the ULSI micro-interconnect includes a barrier layer formed on the substrate and a ruthenium electroplating layer formed on the barrier layer; the ULSI micro-interconnect member further including a copper electroplating layer formed using the ruthenium electroplating layer as a seed layer; and a process for fabricating the ULSI micro-interconnect members.Type: GrantFiled: January 8, 2009Date of Patent: March 5, 2013Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Junnosuke Sekiguchi, Toru Imori, Takashi Kinase
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Patent number: 8333834Abstract: An object of the present invention is to provide a high-purity aqueous copper sulfonate solution and a simplified method of producing this solution. The aqueous copper sulfonate solution of the present invention is characterized in that the copper concentration therein is at least 90 g/L, the content of metal impurities is less than 10 mg/L as metal for each metal impurity, the content of chlorine is less than 10 mg/L, and the sulfonic acid is a sulfonic acid represented by the following general formula R—(SO3H)n (in the formula, R represents a lower alkyl group, lower alkylidene group, lower alkylene group, or hydroxyalkyl group and n represents 1 or 2).Type: GrantFiled: February 9, 2011Date of Patent: December 18, 2012Assignee: JX Nippon Mining & Metals CorporationInventors: Junnosuke Sekiguchi, Masaomi Murakami, Toru Imori
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Patent number: 8283051Abstract: A plated product made of a substrate having formed thereon an alloy barrier thin film for preventing copper diffusion contains metal B, which has barrier properties in relation to copper and enables displacement plating with the copper ions contained in an electroless copper plating solution, and metal A, which tends to have less ionization than metal B in an electroless copper plating solution at a pH of 10 or higher; the alloy barrier thin film for preventing copper diffusion has a composition wherein metal A constitutes between 15 and 35 at % of the atoms; and a copper thin film is formed on the alloy barrier thin film by electroless plating using an electroless copper plating solution at a pH of 10 or higher.Type: GrantFiled: July 13, 2009Date of Patent: October 9, 2012Assignee: JX Nippon Mining & Metals CorporationInventors: Junichi Ito, Atsushi Yabe, Junnosuke Sekiguchi, Toru Imori, Yasuhiro Yamakoshi, Shinichiro Senda
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Patent number: 8247301Abstract: A substrate having, on a base material, a barrier film for preventing copper diffusion containing one or more metal elements selected from tungsten, molybdenum and niobium, a metal element having a catalytic function in electroless plating such as ruthenium, rhodium, and iridium, and nitrogen contained in the form of a nitride of the aforementioned one or more metal elements selected from tungsten, molybdenum and niobium. The barrier film for preventing copper diffusion is manufactured by sputtering in a nitrogen atmosphere using a target containing one or more metal elements selected from tungsten, molybdenum and niobium and the aforementioned metal element having a catalytic function in electroless plating.Type: GrantFiled: November 26, 2008Date of Patent: August 21, 2012Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Junichi Ito, Atsushi Yabe, Junnosuke Sekiguchi, Toru Imori
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Publication number: 20120174827Abstract: An object of the present invention is to provide a high-purity aqueous copper sulfonate solution and a simplified method of producing this solution. The aqueous copper sulfonate solution of the present invention is characterized in that the copper concentration therein is at least 90 g/L, the content of metal impurities is less than 10 mg/L as metal for each metal impurity, the content of chlorine is less than 10 mg/L, and the sulfonic acid is a sulfonic acid represented by the following general formula R—(SO3H)n (in the formula, R represents a lower alkyl group, lower alkylidene group, lower alkylene group, or hydroxyalkyl group and n represents 1 or 2).Type: ApplicationFiled: February 9, 2011Publication date: July 12, 2012Inventors: Junnosuke Sekiguchi, Masaomi Murakami, Toru Imori
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Patent number: 8182873Abstract: A method for metal plating with good adhesion to materials that are difficult to plate wherein a material to be plated is surface-treated with a silane coupling agent having in a molecule thereof a functional group with a metal-capturing capability, is heat treated at a high temperature of at least 150° C. in air or an inert gas atmosphere, surface treatment is performed with a solution containing a noble metal compound, and electroless plating is performed. Alternatively, a metal plating method is provided wherein a material to be plated is surface-treated with a liquid in which a noble metal compound and a silane coupling agent having in a molecule thereof a functional group with a metal-capturing capability have already been mixed or reacted, is heat treated at a high temperature of at least 150° C. in air or an inert gas atmosphere, and electroless plating is performed.Type: GrantFiled: March 31, 2004Date of Patent: May 22, 2012Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Toru Imori, Junnosuke Sekiguchi, Atsushi Yabe, Yoshihisa Fujihira
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Publication number: 20120118747Abstract: An object of the present invention is to provide a nickel-iron alloy plating solution which can suppress, in the nickel-iron alloy plating solution containing divalent iron ions and divalent nickel ions, oxidation of divalent iron ions to trivalent iron ions and can prevent occurrence of the precipitation of iron (III) hydroxide to allow stable continuous operations and also to provide a nickel-iron alloy plating solution which allows production of a soft magnetic film being stable in composition. The nickel-iron alloy plating solution of the present invention is characterized in that it comprises divalent iron ions, divalent nickel ions and a hydroxylamine salt and has a pH of 3.0 or lower.Type: ApplicationFiled: October 25, 2010Publication date: May 17, 2012Inventors: Masaomi Murakami, Junnosuke Sekiguchi
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Publication number: 20120103229Abstract: An object of the present invention is to provide an aqueous solution containing divalent iron ions having improved storage stability such that oxidation over time of divalent iron ions in the aqueous solution containing divalent iron ions to trivalent iron ions is suppressed and occurrence of the precipitation of iron (III) hydroxide is prevented for long periods. The present invention relates to an aqueous solution containing divalent iron ions having improved storage stability characterized in that it comprises divalent iron ions and a hydroxylamine salt as a reducing agent and has a pH of 3.0 or lower. The pH is preferably 2.2 or lower and more preferably 1.2 or lower.Type: ApplicationFiled: October 25, 2010Publication date: May 3, 2012Applicant: JX Nippon Mining & Metals CorporationInventors: Masaomi Murakami, Junnosuke Sekiguchi
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Publication number: 20120103820Abstract: An object of the present invention is to provide an electrolytic copper plating solution which can suppress, upon electrolytic copper plating on a copper seed layer during fabrication of ULSI copper microwiring (damascene copper wiring) having trends to further miniaturization, dissolution of the copper seed layer and accordingly can suppress occurrence of voids on the inner wall of vias/trenches. The present invention provides an electrolytic copper plating solution for filling for forming microwiring for ULSI, characterized in that it has a pH of 1.8 or higher and 3.0 or lower. The electrolytic copper plating solution preferably comprises a saturated carboxylic acid having 1 or more and 4 or less carbon atoms at 0.01 mol/L or more and 2.0 mol/L or less.Type: ApplicationFiled: June 22, 2010Publication date: May 3, 2012Inventors: Junnosuke Sekiguchi, Hirofumi Takahashi, Akihiro Aiba
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Patent number: 8163400Abstract: The present invention provides a plated article that has a thin seed layer having a uniform thickness, formed by electroless plating and allowing formation of ultrafine wiring, and that avoids the complicated formation of a bilayer of a barrier layer and a catalytic metal layer prior to forming the seed layer. The present invention also provides a method for manufacturing the plated article. The plated article has an alloy thin film formed on a substrate and containing a catalytically active metal (A) for electroless plating and a metal (B) capable of undergoing displacement plating with a metal ion contained in an electroless plating solution, and a metal thin film formed on the alloy thin film by electroless displacement and reduction plating. The alloy thin film of the catalytically active metal (A) and the metal (B) capable of displacement plating has a composition comprising 5at% to 40at% of the metal (A).Type: GrantFiled: July 18, 2008Date of Patent: April 24, 2012Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Atsushi Yabe, Junichi Ito, Yoshiyuki Hisumi, Junnosuke Sekiguchi, Toru Imori
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Patent number: 8089154Abstract: It is an object of the present invention to provide a technology for forming an ULSI fine copper wiring by a simpler method. An electronic component in which a thin alloy film of tungsten and a noble metal used as a barrier-seed layer for an ULSI fine copper wiring is formed on a base material, wherein the thin alloy film has a composition comprising tungsten at a ratio equal to or greater than 50 at. % and the noble metal at a ratio of equal to or greater than 5 at. % and equal to or less than 50 at. %. The noble metal is preferably one or more kinds of metals selected from the group consisting of ruthenium, rhodium, and iridium.Type: GrantFiled: February 19, 2009Date of Patent: January 3, 2012Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Junnosuke Sekiguchi, Toru Imori