Patents by Inventor Norizumi Matsui
Norizumi Matsui 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: 10138559Abstract: Provided is a chemical conversion agent that, with respect to an aluminum metal material, etc., contributes to superior corrosion and moisture resistance, contributes to superior adhesion with a laminate film, and contributes to superior hydrofluoric acid and alkali resistance. The chemical conversion agent includes: one or more type of metal element (A) selected from a group comprising of zirconium, titanium, and hafnium; vanadium element (B); and a resin (C). The resin (C) includes a polyvinyl alcohol resin (C1). The ratio (Wa/Wb) of the weight-based total content (Wa) of the metal element (A) relative to the weight-based content (Wb) of vanadium element (B) is 0.1-15, and the ratio ((Wa+Wb)/Wc1) of the weight-based total content (Wa+Wb) of the metal element (A) and the vanadium element (B) relative to the weight-based total content (Wc1) of the polyvinyl alcohol resin (C1) is 0.25-15.Type: GrantFiled: April 3, 2014Date of Patent: November 27, 2018Assignee: NIPPON PAINT SURF CHEMICALS CO., LTD.Inventors: Akihiro Mizuno, Norizumi Matsui
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Patent number: 9896766Abstract: Provided is a surface processing method for an aluminum heat exchanger, by which odor can be suppressed and which enables the aluminum heat exchanger to exhibit corrosion resistance and moisture resistance that are excellent to conventional art. The surface processing method for an aluminum heat exchanger uses a chemical conversion treatment agent that includes: one, or two or more type of a metallic element (A) selected from a group comprising of zirconium, titanium, and hafnium; vanadium element (B); and a resin (C). The resin (C) includes a polyvinyl alcohol resin (C1). The ratio (Wa/Wb) of the weight-based total content (Wa) of the metallic element (A) relative to the weight-based content (Wb) of vanadium element (B) is 0.1-15, and the ratio ((Wa+Wb)/Wc1) of the weight-based total content (Wa+Wb) of the metallic element (A) and vanadium element (B) relative to the weight-based total content (Wc1) of the polyvinyl alcohol resin (C1) is 0.25-15.Type: GrantFiled: April 3, 2014Date of Patent: February 20, 2018Assignee: NIPPON PAINT SURF CHEMICALS CO., LTD.Inventors: Akihiro Mizuno, Norizumi Matsui, Yuko Wada
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Patent number: 9879345Abstract: A chemical conversion agent which is capable of providing, for example, an aluminum-based metal material with excellent corrosion resistance and moisture resistance, while also providing the aluminum-based metal material with excellent adhesion with a laminate film, excellent hydrofluoric acid resistance, and excellent alkali resistance. The chemical conversion agent has (1) a mass concentration of zirconium of 5-5,000 ppm by mass; (2) a mass concentration of titanium is 5-5,000 ppm by mass; (3) a mass concentration of vanadium is 10-1,000 ppm by mass; (4) a mass concentration of a metal stabilizer is 5-5,000 ppm by mass; and (5) the pH is 2-6.Type: GrantFiled: March 8, 2013Date of Patent: January 30, 2018Assignee: NIPPON PAINT SURF CHEMICALS CO., LTD.Inventors: Norizumi Matsui, Yuko Wada, Akihiro Mizuno, Junsuke Hokka
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Patent number: 9757811Abstract: A surface treatment method capable of imparting exceptional corrosion resistance and moisture resistance to an NB heat exchanger. The method includes subjecting an NB heat exchanger to a chemical conversion treatment to form a chemical conversion film on the surface thereof using a chemical conversion treatment agent that contains zirconium and/or titanium in a total amount of 5-5,000 ppm by weight, vanadium in an amount of 10-1,000 ppm by weight, and has a pH of 2-6; bringing the NB heat exchanger on whose surface the chemical conversion film is formed into contact with a hydrophilization agent containing a hydrophilic resin and a guanidine compound and/or a salt thereof; and baking the NB heat exchanger subjected to the contacting process, whereby a hydrophilic film is formed on the surface thereof.Type: GrantFiled: September 20, 2012Date of Patent: September 12, 2017Assignee: Nippon Paint Surf Chemicals Co., Ltd.Inventors: Norizumi Matsui, Yuko Wada, Akihiro Mizuno, Junsuke Hokka
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Patent number: 9739544Abstract: A surface treatment method for aluminum heat exchangers including (a) a step wherein a chemical conversion coating film is formed on the surface of an aluminum heat exchanger by subjecting the aluminum heat exchanger to chemical conversion using a chemical conversion agent; (b) a step wherein the aluminum heat exchanger, the surface of which has been provided with a chemical conversion coating film in step (a), is brought into contact with a hydrophilizing agent that contains a hydrophilic resin; and (c) a step wherein a hydrophilized coating film is formed on the surface of the aluminum heat exchanger by baking the aluminum heat exchanger, which has been subjected to a contact treatment in step (b). The chemical conversion agent used in step (a) contains zirconium and/or titanium in an amount of 5-5,000 ppm by mass in total, vanadium in an amount of 10-1,000 ppm by mass and a metal stabilizer in an amount of 5-5,000 ppm by mass. In addition, the chemical conversion agent used in step (a) has a pH of 2-6.Type: GrantFiled: March 8, 2013Date of Patent: August 22, 2017Assignees: Nippon Paint Surf Chemicals Co., Ltd., Denso CorporationInventors: Norizumi Matsui, Akihiro Mizuno, Yuko Wada, Junsuki Hokka, Kenji Nakamura, Takayuki Hirose, Kengo Kobayashi
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Publication number: 20160060765Abstract: Provided is a surface processing method for an aluminum heat exchanger, by which odor can be suppressed and which enables the aluminum heat exchanger to exhibit corrosion resistance and moisture resistance that are excellent to conventional art. The surface processing method for an aluminum heat exchanger uses a chemical conversion treatment agent that includes: one, or two or more type of a metallic element (A) selected from a group comprising of zirconium, titanium, and hafnium; vanadium element (B); and a resin (C). The resin (C) includes a polyvinyl alcohol resin (C1). The ratio (Wa/Wb) of the weight-based total content (Wa) of the metallic element (A) relative to the weight-based content (Wb) of vanadium element (B) is 0.1-15, and the ratio ((Wa+Wb)/Wc1) of the weight-based total content (Wa+Wb) of the metallic element (A) and vanadium element (B) relative to the weight-based total content (Wc1) of the polyvinyl alcohol resin (C1) is 0.25-15.Type: ApplicationFiled: April 3, 2014Publication date: March 3, 2016Inventors: Akihiro MIZUNO, Norizumi MATSUI, Yuko WADA
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Publication number: 20160040298Abstract: Provided is a chemical conversion agent that, with respect to an aluminum metal material, etc., contributes to superior corrosion and moisture resistance, contributes to superior adhesion with a laminate film, and contributes to superior hydrofluoric acid and alkali resistance. The chemical conversion agent includes: one or more type of metal element (A) selected from a group comprising of zirconium, titanium, and hafnium; vanadium element (B); and a resin (C). The resin (C) includes a polyvinyl alcohol resin (C1). The ratio (Wa/Wb) of the weight-based total content (Wa) of the metal element (A) relative to the weight-based content (Wb) of vanadium element (B) is 0.1-15, and the ratio ((Wa+Wb)/Wc1) of the weight-based total content (Wa+Wb) of the metal element (A) and the vanadium element (B) relative to the weight-based total content (Wc1) of the polyvinyl alcohol resin (C1) is 0.25-15.Type: ApplicationFiled: April 3, 2014Publication date: February 11, 2016Inventors: Akihiro MIZUNO, Norizumi MATSUI
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Patent number: 9139913Abstract: Disclosed is an anti-corrosion treatment method for a heat exchanger, in which even if an aluminum material-made heat exchanger having been flux-brazed by the NB process, in particular, an aluminum material-made heat exchanger to be used for automobile air conditioner is not subjected to a chemical conversion treatment in advance, not only corrosion resistance can be significantly enhanced without impairing hydrophilicity, but deodorizing properties can be enhanced. The anti-corrosion treatment method for an aluminum material-made heat exchanger includes bringing an aluminum material-made heat exchanger having been flux-brazed by the NOCOLOK brazing process into contact with a hydrophilic treatment liquid and then applying a baking treatment, thereby forming a hydrophilic film on the surface of the aluminum material-made heat exchanger, wherein the hydrophilic treatment liquid contains a hydrophilic resin and a lithium ion, and a lithium concentration in the hydrophilic film is from 0.05 to 25% by mass.Type: GrantFiled: November 26, 2010Date of Patent: September 22, 2015Assignee: NIPPON PAINT CO., LTD.Inventors: Norizumi Matsui, Hiroko Okamura
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Publication number: 20150027342Abstract: A chemical conversion agent which is capable of providing, for example, an aluminum-based metal material with excellent corrosion resistance and moisture resistance, while also providing the aluminum-based metal material with excellent adhesion with a laminate film, excellent hydrofluoric acid resistance, and excellent alkali resistance. The chemical conversion agent has (1) a mass concentration of zirconium of 5-5,000 ppm by mass; (2) a mass concentration of titanium is 5-5,000 ppm by mass; (3) a mass concentration of vanadium is 10-1,000 ppm by mass; (4) a mass concentration of a metal stabilizer is 5-5,000 ppm by mass; and (5) the pH is 2-6.Type: ApplicationFiled: March 8, 2013Publication date: January 29, 2015Inventors: Norizumi Matsui, Yuko Wada, Akihiro Mizuno, Junsuke Hokka
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Publication number: 20150013947Abstract: A surface treatment method for aluminum heat exchangers including (a) a step wherein a chemical conversion coating film is formed on the surface of an aluminum heat exchanger by subjecting the aluminum heat exchanger to chemical conversion using a chemical conversion agent; (b) a step wherein the aluminum heat exchanger, the surface of which has been provided with a chemical conversion coating film in step (a), is brought into contact with a hydrophilizing agent that contains a hydrophilic resin; and (c) a step wherein a hydrophilized coating film is formed on the surface of the aluminum heat exchanger by baking the aluminum heat exchanger, which has been subjected to a contact treatment in step (b). The chemical conversion agent used in step (a) contains zirconium and/or titanium in an amount of 5-5,000 ppm by mass in total, vanadium in an amount of 10-1,000 ppm by mass and a metal stabilizer in an amount of 5-5,000 ppm by mass. In addition, the chemical conversion agent used in step (a) has a pH of 2-6.Type: ApplicationFiled: March 8, 2013Publication date: January 15, 2015Inventors: Norizumi Matsui, Akihiro Mizuno, Yuko Wada, Junsuke Hokka
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Publication number: 20140223740Abstract: A surface treatment method capable of imparting exceptional corrosion resistance and moisture resistance to an NB heat exchanger. The method includes subjecting an NB heat exchanger to a chemical conversion treatment to form a chemical conversion film on the surface thereof using a chemical conversion treatment agent that contains zirconium and/or titanium in a total amount of 5-5,000 ppm by weight, vanadium in an amount of 10-1,000 ppm by weight, and has a pH of 2-6; bringing the NB heat exchanger on whose surface the chemical conversion film is formed into contact with a hydrophilization agent containing a hydrophilic resin and a guanidine compound and/or a salt thereof; and baking the NB heat exchanger subjected to the contacting process, whereby a hydrophilic film is formed on the surface thereof.Type: ApplicationFiled: September 20, 2012Publication date: August 14, 2014Applicant: Nippon Paint Co., Ltd.Inventors: Norizumi Matsui, Yuko Wada, Akihiro Mizuno, Junsuke Hokka
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Publication number: 20120288634Abstract: Disclosed is an anti-corrosion treatment method for a heat exchanger, in which even if an aluminum material-made heat exchanger having been flux-brazed by the NB process, in particular, an aluminum material-made heat exchanger to be used for automobile air conditioner is not subjected to a chemical conversion treatment in advance, not only corrosion resistance can be significantly enhanced without impairing hydrophilicity, but deodorizing properties can be enhanced. The anti-corrosion treatment method for an aluminum material-made heat exchanger includes bringing an aluminum material-made heat exchanger having been flux-brazed by the Nocolok brazing process into contact with a hydrophilic treatment liquid and then applying a baking treatment, thereby forming a hydrophilic film on the surface of the aluminum material-made heat exchanger, wherein the hydrophilic treatment liquid contains a hydrophilic resin and a lithium ion, and a lithium concentration in the hydrophilic film is from 0.05 to 25% by mass.Type: ApplicationFiled: November 26, 2010Publication date: November 15, 2012Applicant: NIPPON PAINT CO., LTD.Inventors: Norizumi Matsui, Hiroko Okamura
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Patent number: 7503381Abstract: There is disclosed a rust prevention and hydrophilization treatment method for a flux-brazed aluminum-made heat exchanger which comprises subjecting the same to a rust prevention treatment by the use of a zirconium base compound and/or a titanium base compound, and thereafter subjecting the same to a hydrophilization treatment by means of a hydrophilization treatment agent composition containing the under-mentioned components: (1) 40 to 90% by mass of polyvinyl alcohol having a degree of saponification of at least 90%; (2) 3 to 40% by mass of polyoxyalkylene-modified polyvinyl alcohol in which 0.01 to 20% of pendant groups are polyoxyalkylene ether groups; (3) 1 to 30% by mass of an inorganic cross-linking agent which reacts with hydroxyl groups of the polyvinyl alcohol and modified polyvinyl alcohol; and (4) 1 to 20% by mass of a guanidine compound and/or a salt thereof.Type: GrantFiled: August 4, 2005Date of Patent: March 17, 2009Assignees: Nippon Paint Co., Ltd., Denso CorporationInventors: Toshio Inbe, Norizumi Matsui, Kengo Kobayashi, Osamu Kasebe
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Patent number: 7029522Abstract: A rust prevention coating agent which can be used even in uses requiring high corrosion-resistant performance because of having corrosion resistance superior to a conventional surface treatment agent, and is excellent in the adhesion to a coating film, and a method of rust-proofing using the same are provided. The prevention coating agent comprises a fluorine and zirconium-containing compound and certain guanidine compounds and/or salts thereof.Type: GrantFiled: February 17, 2004Date of Patent: April 18, 2006Assignee: Nippon Paint Co., Ltd.Inventors: Norizumi Matsui, Toshio Inbe
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Publication number: 20060027629Abstract: There is disclosed a rust prevention and hydrophilization treatment method for a flux-brazed aluminum-made heat exchanger which comprises subjecting the same to a rust prevention treatment by the use of a zirconium base compound and/or a titanium base compound, and thereafter subjecting the same to a hydrophilization treatment by means of a hydrophilization treatment agent composition containing the under-mentioned components: (1) 40 to 90% by mass of polyvinyl alcohol having a degree of saponification of at least 90%; (2) 3 to 40% by mass of polyoxyalkylene-modified polyvinyl alcohol in which 0.01 to 20% of pendant groups are polyoxyalkylene ether groups; (3) 1 to 30% by mass of an inorganic cross-linking agent which reacts with hydroxyl groups of the polyvinyl alcohol and modified polyvinyl alcohol; and (4) 1 to 20% by mass of a guanidine compound and/or a salt thereof.Type: ApplicationFiled: August 4, 2005Publication date: February 9, 2006Inventors: Toshio Inbe, Norizumi Matsui, Kengo Kobayashi, Osamu Kasebe
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Publication number: 20040244875Abstract: It is an object of the present invention to provide a method of metal surface treatment and a surface treated metal thereby, which has excellent corrosion resistance and can form a coat having high corrosion resistance on metal substrates such as iron, zinc, aluminum and magnesium.Type: ApplicationFiled: June 8, 2004Publication date: December 9, 2004Inventors: Mitsuhiro Yasuda, Toshio Inbe, Norizumi Matsui, Katsuyoshi Yamasoe
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Publication number: 20040217328Abstract: It is an object of the present invention to provide a rust prevention coating agent which can be used even in uses requiring high corrosion-resistant performance because of having corrosion resistance superior to a conventional surface treatment agent, and is excellent in the adhesion to a coating film, and a method of rust-proofing using the same.Type: ApplicationFiled: February 17, 2004Publication date: November 4, 2004Applicant: NIPPON PAINT CO., LTDInventors: Norizumi Matsui, Toshio Inbe
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Patent number: 6659171Abstract: A hydrophilic modification method comprising a step of forming a coat having a solid coat amount of 0.02 to 3 g/m2 on a heat exchanger with a modifier for hydrophilicity after treatment for rust prevention thereof wherein said modifier for hydrophilicity comprises a modified polyvinyl alcohol (A) having, on a side chain thereof, a group represented by the formula (I): in the formula, n represents an integer of 1 to 500, R1 represents a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, and R2 represents a hydrogen atom or a methyl group, and at least one member (B) selected from the group consisting of phosphorus compound salts and boron compound salts of Ca, Al, Mg, Fe and Zn, said group represented by the formula (I) accounting for 0.01 to 20 mole percent relative to hydroxyl and acetoxy groups contained in said modified polyvinyl alcohol.Type: GrantFiled: March 26, 2002Date of Patent: December 9, 2003Assignees: Nippon Paint Co., Ltd., Denso CorporationInventors: Toshio Inbe, Susumu Maekawa, Akira Ushio, Koichi Saito, Norizumi Matsui, Osamu Kasebe, Kengo Kobayashi, Hiroyoshi Sugawara, Kazuhisa Uchiyama
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Publication number: 20030037914Abstract: A hydrophilic modification method comprisingType: ApplicationFiled: March 26, 2002Publication date: February 27, 2003Applicant: NIPPON PAINT CO., LTD.Inventors: Toshio Inbe, Susumu Maekawa, Akira Ushio, Koichi Saito, Norizumi Matsui, Osamu Kasebe, Kengo Kobayashi, Hiroyoshi Sugawara, Kazuhisa Uchiyama