Patents by Inventor Daigou Mizoguchi
Daigou Mizoguchi 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: 20220317128Abstract: The present invention relates to a method for detecting a particulate substance by immunochromatography, the particulate substance including, on its surface, a plurality of substances to be bound containing a first substance to be bound and a second substance to be bound which may be the same or different with respect to each other, wherein the method includes the steps of: (1) contacting on a membrane a sample containing the particulate substance with a first specific binding substance for the first substance to be bound to capture the particulate substance with the first specific binding substance; (2) contacting the captured particulate substance with a second specific binding substance for the second substance to be bound to label the particulate substance; and (3) detecting the labeled particulate substance, wherein the first specific binding substance is immobilized on the membrane, and the second specific binding substance is bound to a metal nanoparticle.Type: ApplicationFiled: September 7, 2020Publication date: October 6, 2022Inventors: Yuta MIYAZAWA, Daigou MIZOGUCHI, Hirotaka FUJIMOTO, Makoto WATANABE, Taka-Aki SATO
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Publication number: 20210255179Abstract: A method for detecting a test substance using a composition that contains gold nanoplates suitable for detecting the test substance. The composition includes gold nanoplates, and is characterized in that an average aspect ratio of the gold nanoplates (a value obtained by dividing a maximum length of the gold nanoplates by a thickness) is greater than 1 and 10 or less, a concentration of quaternary ammonium cations in the composition is 1 mM or less, and the quaternary ammonium cations are represented by N+(R)4 (each R is independently selected from linear or branched alkyl groups having 1 to 20 carbon atoms).Type: ApplicationFiled: April 30, 2021Publication date: August 19, 2021Inventors: Yuta MIYAZAWA, Daigou MIZOGUCHI
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Publication number: 20190079087Abstract: The present invention aims to provide a composition which contains gold nanoplates, in particular, suitable for detecting a test substance. A composition of the present invention for detecting a test substance, comprising gold nanoplates, is characterized in that an average aspect ratio of the gold nanoplates (a value obtained by dividing a maximum length of the gold nanoplates by a thickness) is greater than 1 and 10 or less, a concentration of quaternary ammonium cations in the composition is 1 mM or less, and the quaternary ammonium cations are represented by N+(R)4 (each R is independently selected from linear or branched alkyl groups having 1 to 20 carbon atoms).Type: ApplicationFiled: March 8, 2017Publication date: March 14, 2019Inventors: Yuta MIYAZAWA, Daigou MIZOGUCHI
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Publication number: 20170199185Abstract: A stable suspension of gold-coated silver nanoplates which is applicable to detection of various substances and able to accommodate various detection means and with which high detection sensitivity is attained in the detection of substances. This suspension of gold-coated silver nanoplates is characterized by containing 0-50 ?M water-soluble polymer and having a pH of 10 or less.Type: ApplicationFiled: May 29, 2015Publication date: July 13, 2017Applicant: Dai Nippon Toryo Co., Ltd.Inventors: Yuta Miyazawa, Daigou Mizoguchi
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Patent number: 8507574Abstract: The present invention provides a zirconium oxide dispersion which contains zirconium oxide particles, a metal complex, and a dispersion medium and which has excellent storage stability; a photo-curing composition containing zirconium oxide particles which contains zirconium oxide particles, a metal complex, an actinic energy ray-curing compound, a photopolymerization initiator, and a dispersion medium and which composition can form, on a surface of a substrate, a cured film having excellent transparency and high refractive index, and which composition does not corrode a metal-made apparatus employed in a dispersion process and a coating apparatus; and a cured film produced by applying onto a substrate the photo-curing composition containing zirconium oxide particles through coating or printing, followed by hardening.Type: GrantFiled: June 6, 2007Date of Patent: August 13, 2013Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Masato Murouchi, Kenji Hayashi, Daigou Mizoguchi, Masaaki Murakami
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Patent number: 8182574Abstract: The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding wavelength, and therefore, they yield tones having high chroma. The present invention provides metal fine particles wherein an aspect ratio is in a range from 1.1 to 8.0, a maximum absorption wavelength in plasmon absorption is in a range from 400 nm to 1,200 nm, and an absorption coefficient at a peak position of the maximum absorption wavelength is in a range from 6,000 to 20,000 L/mol·cm (measurement concentration: 1.6×10?4 mol/L, and solvent: water).Type: GrantFiled: March 24, 2010Date of Patent: May 22, 2012Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Yoshiaki Takata, Hiroki Hirata, Jun-etsu Satoh, Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Daigou Mizoguchi, Masanori Nagai, Masato Murouchi, Masaoki Ishihara
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Patent number: 7976609Abstract: A method for manufacturing metal nanorods includes: a step of adding a reducing agent to a metallic salt solution; a step of radiating light into the metallic salt solution containing the reducing agent; and a step of leaving the light-radiated metallic salt solution containing the reducing agent stationary in a dark place so as to grow metal nanorods. Metal nanorods can be also grown by forming a mixed solution by fractionating the above light-radiated metallic salt solution and mixing the fractionated metallic salt solution into a non-radiated metallic salt solution containing the reducing agent, or mixing a non-radiated metallic salt solution and the reducing agent into the above light-radiated metallic salt solution; and leaving the mixed solution stationary in a dark place so as to grow metal nanorods.Type: GrantFiled: February 11, 2010Date of Patent: July 12, 2011Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Hiroki Hirata, Daigou Mizoguchi, Yoshiaki Takata, Jun-etsu Satoh, Masaoki Ishihara, Masanori Nagai, Masato Murouchi
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Publication number: 20110037036Abstract: Disclosed is composition providing high refractive index to form a transparent conductive film having excellent transparency and high refractive index, a transparent conductive film produced thereby, a display having the transparent conductive film, and a dispersion having high storage stability for use in preparation of the composition. LCDs employ an anti-reflection film produced from the composition containing a metal complex in a resin solution or a solvent and a high refractive index metal oxide and a conductive metal oxide dispersed therein. However, conventional dispersion has problems such as corroding an apparatus and a material employed in a dispersion step and poor storage stability. Disclosed is a dispersion which contains a high refractive index metal oxide having a refractive index of 1.8 or higher, a conductive metal oxide, an alkoxide-free metal complex, and a dispersion medium, and which has a water content of 3 mass % or less.Type: ApplicationFiled: March 18, 2009Publication date: February 17, 2011Applicant: DAI NIPPON TORYO CO., LTD.Inventors: Masato Murouchi, Kenji Hayashi, Kaoru Suzuki, Daigou Mizoguchi, Masaaki Murakami
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Patent number: 7846976Abstract: A process for producing metallic fine particles is provided by, the reduction of the metallic ions performed in two steps using two types of reducing agents which significantly differ in reducing ability thereof, in which a reducing agent in which the reduction ability is strong is used in the first reduction step, and a reducing agent in which the reduction ability is weak is used in the second reduction step, and the nano-sized metallic fine particles are produced. An aqueous metallic salt solution containing a surfactant is used and a two-step reduction is performed in the same vessel, in which as the reducing agent of the first reduction process, at least one selected from the group consisting of boron hydride, dimethylamine borane, hydrazine, and ascorbic acid is used, and as the reducing agent of the second reduction process, specific alkylamine or alkanolamine is used.Type: GrantFiled: December 8, 2005Date of Patent: December 7, 2010Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Daigou Mizoguchi, Yoshiaki Takata, Jun-etsu Satoh, Hiroki Hirata, Masato Murouchi
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Publication number: 20100229684Abstract: The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding wavelength, and therefore, they yield tones having high chroma. The present invention provides metal fine particles wherein an aspect ratio is in a range from 1.1 to 8.0, a maximum absorption wavelength in plasmon absorption is in a range from 400 nm to 1,200 nm, and an absorption coefficient at a peak position of the maximum absorption wavelength is in a range from 6,000 to 20,000 L/mol·cm (measurement concentration: 1.6×10?4 mol/L, and solvent: water).Type: ApplicationFiled: March 24, 2010Publication date: September 16, 2010Applicants: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Yoshiaki Takata, Hiroki Hirata, Jun-etsu Satoh, Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Daigou Mizoguchi, Masanori Nagai, Masato Murouchi, Masaoki Ishihara
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Publication number: 20100232024Abstract: Through employment of a binder component, tin hydroxide powder serving as a conductive powder, and a high-refractive index powder; through dispersal of tin hydroxide powder and light-transmission-ensuring microparticles in a binder component at a predetermined ratio; and through employment of a specific binder component and, as a conductive powder, tin hydroxide powder and a conductive powder other than tin hydroxide powder at a predetermined ratio, there can be provided a composition which can form a transparent conductive film that exhibits excellent antistatic effect, and has very high visible light transmittance and provides transmitted images with natural hue by virtue of no color absorption wherein, if desired, the film also exhibits excellent scratch resistance and high antiglare effect, or the refractive index of the film can be controlled; such a transparent conductive film, and a display having such a transparent conductive film on a screen thereof.Type: ApplicationFiled: June 6, 2007Publication date: September 16, 2010Applicant: DAI NIPPON TORYO CO., LTDInventors: Masamichi Murota, Hiroshi Ikeda, Kunio Omura, Masato Murouchi, Kenji Hayashi, Daigou Mizoguchi, Masaaki Murakami
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Publication number: 20100143184Abstract: A method for manufacturing metal nanorods includes: a step of adding a reducing agent to a metallic salt solution; a step of radiating light into the metallic salt solution containing the reducing agent; and a step of leaving the light-radiated metallic salt solution containing the reducing agent stationary in a dark place so as to grow metal nanorods. Metal nanorods can be also grown by forming a mixed solution by fractionating the above light-radiated metallic salt solution and mixing the fractionated metallic salt solution into a non-radiated metallic salt solution containing the reducing agent, or mixing a non-radiated metallic salt solution and the reducing agent into the above light-radiated metallic salt solution; and leaving the mixed solution stationary in a dark place so as to grow metal nanorods.Type: ApplicationFiled: February 11, 2010Publication date: June 10, 2010Applicants: MITSUBISHI MATERIALS CORPORATION, DAI NIPPON TORYO CO., LTD.Inventors: Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Hiroki Hirata, Daigou Mizoguchi, Yoshiaki Takata, Jun-etsu Satoh, Masaoki Ishihara, Masanori Nagai, Masato Murouchi
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Patent number: 7691176Abstract: A method for manufacturing metal nanorods includes: a step of adding a reducing agent to a metallic salt solution; a step of radiating light into the metallic salt solution containing the reducing agent; and a step of leaving the light-radiated metallic salt solution containing the reducing agent stationary in a dark place so as to grow metal nanorods. Metal nanorods can be also grown by forming a mixed solution by fractionating the above light-radiated metallic salt solution and mixing the fractionated metallic salt solution into a non-radiated metallic salt solution containing the reducing agent, or mixing a non-radiated metallic salt solution and the reducing agent into the above light-radiated metallic salt solution; and leaving the mixed solution stationary in a dark place so as to grow metal nanorods.Type: GrantFiled: May 13, 2004Date of Patent: April 6, 2010Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Hiroki Hirata, Yoshiaki Takata, Jun-etsu Satoh, Daigou Mizoguchi, Masaoki Ishihara, Masanori Nagai, Masato Murouchi
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Publication number: 20100068482Abstract: The present invention provides a zirconium oxide dispersion which contains zirconium oxide particles, a metal complex, and a dispersion medium and which has excellent storage stability; a photo-curing composition containing zirconium oxide particles which contains zirconium oxide particles, a metal complex, an actinic energy ray-curing compound, a photopolymerization initiator, and a dispersion medium and which composition can form, on a surface of a substrate, a cured film having excellent transparency and high refractive index, and which composition does not corrode a metal-made apparatus employed in a dispersion process and a coating apparatus; and a cured film produced by applying onto a substrate the photo-curing composition containing zirconium oxide particles through coating or printing, followed by hardening.Type: ApplicationFiled: June 6, 2007Publication date: March 18, 2010Applicant: DAI Nippon Toryo Co., Ltd.Inventors: Masato Murouchi, Kenji Hayashi, Daigou Mizoguchi, Masaaki Murakami
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Publication number: 20100025638Abstract: A composition includes a binder component and a conductive powder and a high-refractive-index powder both dispersed in the binder component, wherein the conductive powder includes 0.1 to 30 mass % of a tin hydroxide powder and 70 to 99.9 mass % of other conductive powder. The composition enables to form a transparent conductive film having excellent scratch resistance, excellent antistatic properties, an extremely high visible light transmittance and a controllable refractive index. Also described is the transparent conductive film. Further described is a display having the transparent conductive film on the display surface.Type: ApplicationFiled: June 6, 2007Publication date: February 4, 2010Applicants: MITSUBISHI MATERIALS ELECTRONIC CHEMICALS CO., LTD, MITSUBISHI MATERIALS CORPORATION, DAI NIPPON TORYO CO., LTD.Inventors: Masamichi Murota, Hirotoshi Umeda, Hiroshi Ikeda, Kunio Omura, Masato Murouchi, Kenji Hayashi, Daigou Mizoguchi, Masaaki Murakami
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Publication number: 20090283726Abstract: A process for producing metallic fine particles is provided by, the reduction of the metallic ions performed in two steps using two types of reducing agents which significantly differ in reducing ability thereof, in which a reducing agent in which the reduction ability is strong is used in the first reduction step, and a reducing agent in which the reduction ability is weak is used in the second reduction step, and the nano-sized metallic fine particles are produced. An aqueous metallic salt solution containing a surfactant is used and a two-step reduction is performed in the same vessel, in which as the reducing agent of the first reduction process, at least one selected from the group consisting of boron hydride, dimethylamine borane, hydrazine, and ascorbic acid is used, and as the reducing agent of the second reduction process, specific alkylamine or alkanolamine is used.Type: ApplicationFiled: December 8, 2005Publication date: November 19, 2009Applicants: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Daigou Mizoguchi, Yoshiaki Takata, Jun-etsu Satoh, Hiroki Hirata, Masato Murouchi
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Patent number: 7527668Abstract: This method for manufacturing metal fine particles includes using an aqueous solution containing an amine having a reducing capacity and an ammonium salt having substantially no reducing capacity so as to reduce metal ions with said amine in a presence of said ammonium salt, thereby manufacturing rod-shaped metal fine particles. This metal fine particles are manufactured by this method for manufacturing metal fine particles, and have a major axis of 400 nm or less, a minor axis of 15 nm or less, and an aspect ratio of more than 1.Type: GrantFiled: July 6, 2005Date of Patent: May 5, 2009Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Hiroki Hirata, Yoshiaki Takata, Jun-etsu Satoh, Daigou Mizoguchi, Masato Murouchi
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Publication number: 20070243401Abstract: This method for manufacturing metal fine particles includes using an aqueous solution containing an amine having a reducing capacity and an ammonium salt having substantially no reducing capacity so as to reduce metal ions with said amine in a presence of said ammonium salt, thereby manufacturing rod-shaped metal fine particles. This metal fine particles are manufactured by this method for manufacturing metal fine particles, and have a major axis of 400 nm or less, a minor axis of 15 nm or less, and an aspect ratio of more than 1.Type: ApplicationFiled: July 6, 2005Publication date: October 18, 2007Applicants: MITSUBISHI MATERIALS CORPORATION, Dai Nippon Toryo Co., Ltd.Inventors: Hiroki Hirata, Yoshiaki Takata, Jun-etsu Satoh, Daigou Mizoguchi, Masato Murouchi
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Publication number: 20060266157Abstract: The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding wavelength, and therefore, they yield tones having high chroma. The present invention provides metal fine particles wherein an aspect ratio is in a range from 1.1 to 8.0, a maximum absorption wavelength in plasmon absorption is in a range from 400 nm to 1,200 nm, and an absorption coefficient at a peak position of the maximum absorption wavelength is in a range from 6,000 to 20,000 L/mol·cm (measurement concentration: 1.6×10?4 mol/L, and solvent:water).Type: ApplicationFiled: September 2, 2004Publication date: November 30, 2006Applicant: Dai Nippon Toryo Co., Ltd.Inventors: Yoshiaki Takata, Hiroki Hirata, Jun-etsu Satoh, Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Daigou Mizoguchi, Masanori Nagai, Masato Murouchi, Masaoki Ishihara
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Publication number: 20060196309Abstract: A method for manufacturing metal nanorods includes: a step of adding a reducing agent to a metallic salt solution; a step of radiating light into the metallic salt solution containing the reducing agent; and a step of leaving the light-radiated metallic salt solution containing the reducing agent stationary in a dark place so as to grow metal nanorods. Metal nanorods can be also grown by forming a mixed solution by fractionating the above light-radiated metallic salt solution and mixing the fractionated metallic salt solution into a non-radiated metallic salt solution containing the reducing agent, or mixing a non-radiated metallic salt solution and the reducing agent into the above light-radiated metallic salt solution; and leaving the mixed solution stationary in a dark place so as to grow metal nanorods.Type: ApplicationFiled: May 13, 2004Publication date: September 7, 2006Applicants: Yasuro Niidome, Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Hiroki Hirata, Yoshiaki Takata, Jun-etsu Satoh, Daigou Mizoguchi, Masaoki Ishihara, Masanori Nagai, Masato Murouchi