Patents by Inventor Koji Koyanagi
Koji Koyanagi 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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Publication number: 20210221739Abstract: Provided are a rheology modifier and a method for modifying water rheology for imparting thixotropy and viscosity to water, and a slurry composition having high viscosity and excellent resistance to separation in water and a method for producing such a slurry composition. A rheology modifier containing: (A) a sulfate or a salt thereof having a hydrocarbon group with 12 or more and 22 or less carbon atoms and an average number of moles of added alkylene oxide of 0 or more and 25 or less; and (B) a fatty acid alkanolamide having a fatty acid moiety with 10 or more and 22 or less carbon atoms.Type: ApplicationFiled: June 14, 2017Publication date: July 22, 2021Applicant: Kao CorporationInventors: Koji NAGASAWA, Kenichi SUZUKI, Hisato TERAI, Koji KOYANAGI, Ryu TANIMOTO, Kohei OKADA
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Patent number: 10800702Abstract: A method for producing a hardened product of a hydraulic composition, includes mixing water, a hydraulic powder, a dispersant composition, and an aggregate to prepare a hydraulic composition, filling the hydraulic composition into a mold, and steam curing, in the mold, the hydraulic composition filled into the mold. The dispersant composition includes (A) a formaldehyde naphthaienesulfonate condensate or a salt thereof, (B) a compound having an alkylenoxy group, and optionally (C) a polycarboxylic acid-based copolymer, in particular proportions.Type: GrantFiled: March 15, 2016Date of Patent: October 13, 2020Assignee: KAO CORPORATIONInventors: Yusuke Akino, Yusuke Yoshinami, Koji Koyanagi, Masaaki Shimoda, Keisuke Nakamura, Shunya Tanaka, Kazuya Saida
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Publication number: 20200038827Abstract: The present invention provides a foaming agent composition for civil engineering-construction materials containing an anionic surfactant (A), a surfactant aid (B) and a water-insoluble or slightly water-soluble nonionic surfactant (C).Type: ApplicationFiled: October 11, 2017Publication date: February 6, 2020Applicant: KAO CORPORATIONInventors: Koji KOYANAGI, Hirotaka SASAKI
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Patent number: 10322967Abstract: The present invention is a dispersant composition for a hydraulic composition, which includes (A) a polymer compound having a naphthalene ring-containing monomer unit and (B) a specific alkylene oxide added compound represented by the general formulas (B1) to (B3), wherein a molar ratio of a total amount of the component (B) to the naphthalene ring-containing monomer unit in the component (A) is 0.4% or more and 30% or less.Type: GrantFiled: March 17, 2016Date of Patent: June 18, 2019Assignee: KAO CORPORATIONInventors: Kazuya Saida, Koji Koyanagi, Masaaki Shimoda, Shunya Tanaka
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Patent number: 10322969Abstract: The present invention is a dispersant composition for a hydraulic composition, which includes (A) a cement dispersant composed of a polymer having a naphthalene ring-containing monomer unit, and (B) one or more specific alkylene oxide-added compounds represented by the general formula (B1), wherein a molar ratio of a total amount of (B) to the naphthalene ring-containing monomer unit in (A) is 3% or more and 16% or less.Type: GrantFiled: March 17, 2016Date of Patent: June 18, 2019Assignee: KAO CORPORATIONInventors: Kazuya Saida, Koji Koyanagi, Masaaki Shimoda, Shunya Tanaka
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Publication number: 20180162775Abstract: The present invention provides a dispersant composition for hydraulic compositions for centrifugal molding, which contains (A) a dispersant for hydraulic powders composed of an aromatic ring-containing high-molecular compound; and (B) one or more compounds selected from specific compounds represented by the general formulas (B1) to (B4).Type: ApplicationFiled: March 15, 2016Publication date: June 14, 2018Applicant: KAO CORPORATIONInventors: Yusuke AKINO, Yusuke YOSHINAMI, Koji KOYANAGI, Masaaki SHIMODA, Keisuke NAKAMURA, Shunya TANAKA, Kazuya SAIDA
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Publication number: 20180029936Abstract: The present invention is a dispersant composition for a hydraulic composition, which includes (A) a cement dispersant composed of a polymer having a naphthalene ring-containing monomer unit, and (B) one or more specific alkylene oxide-added compounds represented by the general formula (B1), wherein a molar ratio of a total amount of (B) to the naphthalene ring-containing monomer unit in (A) is 3% or more and 16% or less.Type: ApplicationFiled: March 17, 2016Publication date: February 1, 2018Applicant: KAO CORPORATIONInventors: Kazuya SAIDA, Koji KOYANAGI, Masaaki SHIMODA, Shunya TANAKA
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Publication number: 20180029935Abstract: The present invention is a dispersant composition for a hydraulic composition, which includes (A) a polymer compound having a naphthalene ring-containing monomer unit and (B) a specific alkylene oxide added compound represented by the general formulas (B1) to (B3), wherein a molar ratio of a total amount of the component (B) to the naphthalene ring-containing monomer unit in the component (A) is 0.4% or more and 30% or less.Type: ApplicationFiled: March 17, 2016Publication date: February 1, 2018Applicant: KAO CORPORATIONInventors: Kazuya SAIDA, Koji KOYANAGI, Masaaki SHIMODA, Shunya TANAKA
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Patent number: 8728229Abstract: The present invention provides a cement slurry composition, containing a hydraulic cement material, (A) a first water-soluble low molecular weight compound and (B) a second water-soluble low molecular weight compound differing from the compound (A), wherein a combination of the compounds (A) and (B) is (I) the compound (A) selected from cationic surfactants and the compound (B) selected from anionic aromatic compounds; or (II) the compound (A) selected from cationic surfactants and the compound (B) selected from brominated compounds, and in the compound (A), a ratio of compounds having a hydrocarbon group of 18 or more carbon atoms is not less than 45% by weight.Type: GrantFiled: June 11, 2009Date of Patent: May 20, 2014Assignee: Kao CorporationInventors: Koji Koyanagi, Toshiharu Kojima, Hotaka Yamamuro
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Patent number: 8648120Abstract: The present invention provides a liquid rheology modifier containing compounds (A) and (B) selected from combination (1) of compound (A) selected from cationic surfactants and compound (B) selected from anionic aromatic compounds and combination (2) of compound (A) from cationic surfactants and compound (B) selected from brominated compounds; and dicarboxylic acid (C).Type: GrantFiled: September 5, 2007Date of Patent: February 11, 2014Assignee: Kao CorporationInventors: Koji Koyanagi, Hotaka Yamamuro, Toshiharu Kojima
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Patent number: 8105500Abstract: A slurry rheology modifier comprises a first water-soluble low-molecular compound [referred to hereinafter as compound (A)] and a second water-soluble low-molecular compound [referred to hereinafter as compound (B)] being different from the compound (A), wherein the viscosity of an aqueous solution at 20° C. prepared by mixing an aqueous solution SA (with a viscosity at 20° C. of 100 mPa·s or less) of compound (A) with an aqueous solution SB (with a viscosity at 20° C. of 100 mPa·s or less) of compound (B) in the ratio of 50/50 by weight can be at least twice as high as the viscosity of either aqueous solution before mixed.Type: GrantFiled: April 30, 2008Date of Patent: January 31, 2012Assignee: Kao CorporationInventors: Hotaka Yamamuro, Koji Koyanagi, Daisuke Shiba
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Publication number: 20120000397Abstract: The present invention provides a cement slurry composition, containing a hydraulic cement material, (A) a first water-soluble low molecular weight compound and (B) a second water-soluble low molecular weight compound differing from the compound (A), wherein a combination of the compounds (A) and (B) is (I) the compound (A) selected from cationic surfactants and the compound (B) selected from anionic aromatic compounds; or (II) the compound (A) selected from cationic surfactants and the compound (B) selected from brominated compounds, and in the compound (A), a ratio of compounds having a hydrocarbon group of 18 or more carbon atoms is not less than 45% by weight.Type: ApplicationFiled: June 11, 2009Publication date: January 5, 2012Inventors: Koji Koyanagi, Toshiharu Kojima, Hotaka Yamamuro
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Patent number: 7846876Abstract: The present invention relates to a surfactant composition containing a cationic surfactant (hereinafter referred to as a compound (A)), one or more compounds (hereinafter referred to as a compound (B)) selected from anionic aromatic compounds and bromide compounds and a cationic polymer (C), wherein compound (A) and (B) are selected when meeting the following condition: a combination of the compounds (A) and (B) ensures that that the viscosity (20° C.) of a solution prepared by mixing an aqueous solution SA of the compound (A) and an aqueous solution SB of the compound (B) in the same ratio is at least two times the viscosity of any one of the aqueous solutions (20° C.) before being mixed.Type: GrantFiled: October 6, 2004Date of Patent: December 7, 2010Assignee: Kao CorporationInventors: Koji Koyanagi, Sadahara Miyamoto, Hotaka Yamamuro
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Patent number: 7501021Abstract: Disclosed is a powdery rheology modifier containing an anionic aromatic compound, a cationic surfactant, and an inorganic powder having a specific surface area of 5000 cm2/g or more.Type: GrantFiled: May 31, 2007Date of Patent: March 10, 2009Assignee: Kao CorporationInventors: Koji Koyanagi, Fujio Yamato, Toshiharu Kojima, Hotaka Yamamuro
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Publication number: 20080300341Abstract: A slurry rheology modifier comprises a first water-soluble low-molecular compound [referred to hereinafter as compound (A)] and a second water-soluble low-molecular compound [referred to hereinafter as compound (B)] being different from the compound (A), wherein the viscosity of an aqueous solution at 20° C. prepared by mixing an aqueous solution SA (with a viscosity at 20° C. of 100 mPa·s or less) of compound (A) with an aqueous solution SB (with a viscosity at 20° C. of 100 mPa·s or less) of compound (B) in the ratio of 50/50 by weight can be at least twice as high as the viscosity of either aqueous solution before mixed.Type: ApplicationFiled: April 30, 2008Publication date: December 4, 2008Inventors: Hotaka Yamamuro, Koji Koyanagi, Daisuke Shiba
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Publication number: 20080262129Abstract: The present invention provides production of a powder containing the cationic surfactant (b) by mixing an anionic aromatic compound (a), a cationic surfactant (b) and water to obtain a viscous material and feeding the viscous material heated at the specific temperature to the drying step.Type: ApplicationFiled: April 3, 2008Publication date: October 23, 2008Applicant: Kao CorporationInventors: Hotaka YAMAMURO, Toshiharu KOJIMA, Yoshikazu MORII, Koji KOYANAGI
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Patent number: 7374699Abstract: A slurry rheology modifier comprises a first water-soluble low-molecular compound [referred to hereinafter as compound (A)] and a second water-soluble low-molecular compound [referred to hereinafter as compound (B)] being different from the compound (A), wherein the viscosity of an aqueous solution at 20° C. prepared by mixing an aqueous solution SA (with a viscosity at 20° C. of 100 mPa·s or less) of compound (A) with an aqueous solution SB (with a viscosity at 20° C. of 100 mPa·s or less) of compound (B) in the ratio of 50/50 by weight can be at least twice as high as the viscosity of either aqueous solution before mixed.Type: GrantFiled: June 14, 2002Date of Patent: May 20, 2008Assignee: Kao CorporationInventors: Hotaka Yamamuro, Koji Koyanagi, Daisuke Shiba
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Publication number: 20080078814Abstract: The present invention provides a liquid rheology modifier containing compounds (A) and (B) selected from combination (1) of compound (A) selected from cationic surfactants and compound (B) selected from anionic aromatic compounds and combination (2) of compound (A) from cationic surfactants and compound (B) selected from brominated compounds; and dicarboxylic acid (C).Type: ApplicationFiled: September 5, 2007Publication date: April 3, 2008Applicant: Kao CorporationInventors: Koji Koyanagi, Hotaka Yamamuro, Toshiharu Kojima
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Publication number: 20080058227Abstract: The present invention relates to a surfactant composition containing a cationic surfactant (hereinafter referred to as a compound (A)), one or more compounds (hereinafter referred to as a compound (B)) selected from anionic aromatic compounds and bromide compounds and a cationic polymer (C), wherein compound (A) and (B) are selected when meeting the following condition: a combination of the compounds (A) and (B) ensures that that the viscosity (20° C.) of a solution prepared by mixing an aqueous solution S A of the compound (A) and an aqueous solution SB of the compound (B) in the same ratio is at least two times the viscosity of any one of the aqueous solutions (20° C.) before being mixed.Type: ApplicationFiled: October 6, 2004Publication date: March 6, 2008Applicant: Kao CorporationInventors: Koji Koyanagi, Sadahara Miyamoto, Hotaka Yamamuro
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Publication number: 20070290160Abstract: Disclosed is a powdery rheology modifier containing an anionic aromatic compound, a cationic surfactant, and an inorganic powder having a specific surface area of 5000 cm2/g or more.Type: ApplicationFiled: May 31, 2007Publication date: December 20, 2007Applicant: Kao CorporationInventors: Koji Koyanagi, Fujio Yamato, Toshiharu Kojima, Hotaka Yamamuro