Patents by Inventor Shigeru Shimada
Shigeru Shimada 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: 20240300984Abstract: The present invention provides a method for producing a silanol compound capable of efficiently producing a silanol compound. The method for producing a silanol compound includes a proton exchange step of forming a silanol compound having a structure represented by following formula (c) by reacting a silicate having a structure represented by following formula (a) with an acidic compound having an acid dissociation constant pKa of ?1 to 20 in dimethyl sulfoxide (DMSO). (In formula (a), Qi+ represents an i-valent cation and i represents an integer of 1 to 4).Type: ApplicationFiled: May 14, 2024Publication date: September 12, 2024Inventors: Masayasu Igarashi, Kazuhiko Sato, Fujio Yagihashi, Tomohiro Matsumoto, Takeshi Nozawa, Shigeru Shimada
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Patent number: 12024532Abstract: The present invention provides a method for producing a silanol compound capable of efficiently producing a silanol compound. The method for producing a silanol compound includes a proton exchange step of forming a silanol compound having a structure represented by following formula (c) by reacting a silicate having a structure represented by following formula (a) with an acidic compound having an acid dissociation constant pKa of ?1 to 20 in dimethyl sulfoxide (DMSO). (In formula (a), Qi+ represents an i-valent cation and i represents an integer of 1 to 4).Type: GrantFiled: September 10, 2021Date of Patent: July 2, 2024Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Masayasu Igarashi, Kazuhiko Sato, Fujio Yagihashi, Tomohiro Matsumoto, Takeshi Nozawa, Shigeru Shimada
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Publication number: 20220056056Abstract: The present invention provides a method for producing a silanol compound capable of efficiently producing a silanol compound. The method for producing a silanol compound includes a proton exchange step of forming a silanol compound having a structure represented by following formula (c) by reacting a silicate having a structure represented by following formula (a) with an acidic compound having an acid dissociation constant pKa of ?1 to 20 in dimethyl sulfoxide (DMSO). (In formula (a), Qi+ represents an i-valent cation and i represents an integer of 1 to 4).Type: ApplicationFiled: September 10, 2021Publication date: February 24, 2022Inventors: Masayasu IGARASHI, Kazuhiko SATO, Fujio YAGIHASHI, Tomohiro MATSUMOTO, Takeshi NOZAWA, Shigeru SHIMADA
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Patent number: 11203605Abstract: An organosilicon compound can be efficiently produced by using metallic element-containing nanoparticles such as a platinum element-containing nanoparticle having a solvent on surface as a catalyst of the hydrosilylation reaction of alkenes.Type: GrantFiled: July 12, 2019Date of Patent: December 21, 2021Assignee: THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Yasushi Obora, Xianjin Lin, Yumiko Nakajima, Shigeru Shimada, Kazuhiko Sato
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Patent number: 10975107Abstract: The purpose of the present invention is to provide a method for producing an oligosiloxane and an oligosiloxane synthesizer, by which an oligosiloxane can be efficiently produced. An oligosiloxane can be efficiently produced by the method for producing an oligosiloxane, which includes a condensation step for generating a hydrosiloxane having a structure represented by the following Formula (d) by reacting an alkoxysilane having a structure represented by the following Formula (b) with a hydrosilane having a structure represented by the following Formula (c) in the presence of a boron compound having Lewis acidity, and a hydrosilylation step for generating an alkoxysiloxane having a structure represented by the following Formula (f) by reacting the hydrosiloxane having the structure represented by Formula (d) generated in the condensation step with a carbonyl compound represented by the following Formula (E) in the presence of a boron compound having Lewis acidity.Type: GrantFiled: March 1, 2018Date of Patent: April 13, 2021Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Kazuhiro Matsumoto, Kazuhiko Sato, Shigeru Shimada
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Publication number: 20210061824Abstract: The present invention provides a method for producing a silanol compound capable of efficiently producing a silanol compound. The method for producing a silanol compound includes a proton exchange step of forming a silanol compound having a structure represented by following formula (c) by reacting a silicate having a structure represented by following formula (a) with an acidic compound having an acid dissociation constant pKa of ?1 to 20 in dimethyl sulfoxide (DMSO). (In formula (a), Qi+ represents an i-valent cation and i represents an integer of 1 to 4).Type: ApplicationFiled: March 5, 2018Publication date: March 4, 2021Inventors: Masayasu IGARASHI, Kazuhiko SATO, Fujio YAGIHASHI, Tomohiro MATSUMOTO, Takeshi NOZAWA, Shigeru SHIMADA
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Publication number: 20200283297Abstract: A method for producing an oligosilane which includes a reaction step of producing an oligosilane by dehydrogenative coupling of hydrosilane. The reaction step is carried out in the presence of a catalyst containing at least one transition element selected from the group consisting of Periodic Table group 3 transition elements, group 4 transition elements, group 5 transition elements, group 6 transition elements, and group 7 transition elements. Also disclosed is a method for producing a catalyst for dehydrogenative coupling that produces an oligosilane by dehydrogenative coupling of hydrosilane.Type: ApplicationFiled: February 14, 2017Publication date: September 10, 2020Applicant: SHOWA DENKO K.K.Inventors: Kiyoshi NOMURA, Hiroshi UCHIDA, Yoshimitsu ISHIHARA, Shigeru SHIMADA, Kazuhiko SATO, Masayasu IGARASHI
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Publication number: 20200079803Abstract: The purpose of the present invention is to provide a method for producing an oligosiloxane and an oligosiloxane synthesizer, by which an oligosiloxane can be efficiently produced. An oligosiloxane can be efficiently produced by the method for producing an oligosiloxane, which includes a condensation step for generating a hydrosiloxane having a structure represented by the following Formula (d) by reacting an alkoxysilane having a structure represented by the following Formula (b) with a hydrosilane having a structure represented by the following Formula (c) in the presence of a boron compound having Lewis acidity, and a hydrosilylation step for generating an alkoxysiloxane having a structure represented by the following Formula (f) by reacting the hydrosiloxane having the structure represented by Formula (d) generated in the condensation step with a carbonyl compound represented by the following Formula (E) in the presence of a boron compound having Lewis acidity.Type: ApplicationFiled: March 1, 2018Publication date: March 12, 2020Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Kazuhiro MATSUMOTO, Kazuhiko SATO, Shigeru SHIMADA
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Publication number: 20190337967Abstract: An organosilicon compound can be efficiently produced by using metallic element-containing nanoparticles such as a platinum element-containing nanoparticle having a solvent on surface as a catalyst of the hydrosilylation reaction of alkenes.Type: ApplicationFiled: July 12, 2019Publication date: November 7, 2019Applicant: THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Yasushi OBORA, Xianjin LIN, Yumiko NAKAJIMA, Shigeru SHIMADA, Kazuhiko SATO
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Publication number: 20190256361Abstract: An object of the present invention is to provide an oligosilane production method with which a target oligosilane can be selectively produced. Oligosilanes can be efficiently produced at an improved selectivity for a target oligosilane by using, as a raw material, not only monosilane but also an oligosilane with a smaller number of silicon atoms than the target oligosilane or conversely an oligosilane with a larger number of silicon atoms than the target oligosilane.Type: ApplicationFiled: June 6, 2017Publication date: August 22, 2019Applicant: SHOWA DENKO K.K.Inventors: Kiyoshi NOMURA, Hiroshi UCHIDA, Yoshimitsu ISHIHARA, Yumiko NAKAJIMA, Shigeru SHIMADA, Kazuhiko SATO
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Patent number: 10316046Abstract: An object of the invention is to provide a method for efficiently producing an acyloxysilane which is useful as a functional chemical, an acyloxysilane obtained thereby, and the use thereof. The present invention provides: a method for producing an acyloxysilane, including a reaction step of reacting an alkoxysilane with a carboxylic anhydride in the presence of a catalyst, wherein the alkoxysilane is a specified alkoxysilane represented by General Formula (I), the carboxylic anhydride is a specified carboxylic acid represented by General Formula (IIA) or (IIB), the catalyst is an acid catalyst, and an acyloxysilane obtained in the reaction step is a specified acyloxysilane represented by General Formula (IIIA) or (IIIB); and the use of the acyloxysilane as a surface treatment agent or the like.Type: GrantFiled: March 9, 2016Date of Patent: June 11, 2019Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Hiroshi Yamashita, Makiko Hatori, Michiyo Yoshinaga, Li-Biao Han, Shigeru Shimada, Kazuhiko Sato
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Patent number: 10308670Abstract: The purpose of the present invention is to provide silanol compounds that can be used as raw materials of siloxane compounds and the like, and a composition of the silanol compounds, as well as to provide a production method that makes it possible to produce silanol compounds at excellent yield. A composition comprising 5 mass % to 100 mass % of a silanol compound represented by Formulas (A) to (C) can be prepared by devising to produce silanol compounds under water-free conditions, to produce silanol compounds in a solvent having the effect of suppressing the condensation of silanol compounds, and to perform other such processes, the composition being able to be used as a raw material or the like of siloxane compounds because the silanol compounds can be stably present in the resulting composition.Type: GrantFiled: February 3, 2015Date of Patent: June 4, 2019Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masayasu Igarashi, Shigeru Shimada, Kazuhiko Sato, Tomohiro Matsumoto
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Publication number: 20180044359Abstract: An object of the invention is to provide a method for efficiently producing an acyloxysilane which is useful as a functional chemical, an acyloxysilane obtained thereby, and the use thereof. The present invention provides: a method for producing an acyloxysilane, including a reaction step of reacting an alkoxysilane with a carboxylic anhydride in the presence of a catalyst, wherein the alkoxysilane is a specified alkoxysilane represented by General Formula (I), the carboxylic anhydride is a specified carboxylic acid represented by General Formula (IIA) or (IIB), the catalyst is an acid catalyst, and an acyloxysilane obtained in the reaction step is a specified acyloxysilane represented by General Formula (IIIA) or (IIIB); and the use of the acyloxysilane as a surface treatment agent or the like.Type: ApplicationFiled: March 9, 2016Publication date: February 15, 2018Inventors: Hiroshi Yamashita, Makiko Hatori, Michiyo Yoshinaga, Li-BIAO Han, Shigeru Shimada, Kazuhiko Sato
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Publication number: 20170275171Abstract: An object of the present invention is to provide a method for producing oligosilane and in particular to provide a method that can efficiently produce oligosilane at lower temperatures and with an improved yield and selectivity. In the dehydrogenative coupling reaction of hydrosilane, oligosilane can be efficiently produced at an improved selectivity for oligosilane, and in particular at an improved selectivity for disilane, by carrying out the reaction in the presence of zeolite having pores with a minor diameter of at least 0.43 nm and a major diameter of not more than 0.69 nm.Type: ApplicationFiled: August 12, 2015Publication date: September 28, 2017Applicant: SHOWA DENKO K.K.Inventors: Yoshimitsu ISHIHARA, Hideaki HAMADA, Shigeru SHIMADA, Kazuhiko SATO, Masayasu IGARASHI, Hiroshi UCHIDA
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Patent number: 9735374Abstract: A metal complex exhibits blue light emission of high color purity and has a color purity of small temperature dependence, particularly in the blue region. Specifically, the metal complex is represented by Formula (1a): wherein M is a metal atom; R0 is a divalent linking group; each j independently represents 0 or 1; RP1, RP2, RP3, RP4 and RP6 each independently represents a hydrogen atom or the like; RP5 represents a halogen atom or the like; m is an integer of from 1 to 3, n is an integer of from 0 to 2, and m+n is 2 or 3; and the portion represented by Formula (2): represents a bidentate ligand; wherein Rx and Ry are an atom bonding to the metal atom M, and each independently represents a carbon atom, an oxygen atom or a nitrogen atom.Type: GrantFiled: January 10, 2013Date of Patent: August 15, 2017Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Nobuhiko Akino, Taichi Abe, Hideo Konno, Shigeru Shimada, Kazuhiko Sato
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Patent number: 9705097Abstract: A highly stable metal complex useful for the manufacture of a light-emitting device has an excellent lifetime property, particularly in a blue region, specifically a metal complex represented by Formula (1): wherein M is a metal atom; each R0 independently represents a divalent linking group; i and j each independently represent 0 or 1; RP1, RP2, RP3, RP4, RP5 and RP6 each independently represent a hydrogen atom and the like, with a proviso that at least one of RP1, RP2, RP3, RP4, RP5 and RP6 is a dendron; m is an integer of from 1 to 3, n is an integer of from 0 to 2, and m+n is 2 or 3; and the portion represented by Formula (2): represents a bidentate ligand; wherein Rx and Ry are an atom bonding to the metal atom M, and each independently represents a carbon atom and the like.Type: GrantFiled: January 10, 2013Date of Patent: July 11, 2017Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhiko Akino, Taichi Abe, Hideo Konno, Shigeru Shimada, Kazuhiko Sato
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Publication number: 20170183363Abstract: The purpose of the present invention is to provide silanol compounds that can be used as raw materials of siloxane compounds and the like, and a composition of the silanol compounds, as well as to provide a production method that makes it possible to produce silanol compounds at excellent yield. A composition comprising 5 mass % to 100 mass % of a silanol compound represented by Formulas (A) to (C) can be prepared by devising to produce silanol compounds under water-free conditions, to produce silanol compounds in a solvent having the effect of suppressing the condensation of silanol compounds, and to perform other such processes, the composition being able to be used as a raw material or the like of siloxane compounds because the silanol compounds can be stably present in the resulting composition.Type: ApplicationFiled: February 3, 2015Publication date: June 29, 2017Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masayasu Igarashi, Shigeru Shimada, Kazuhiko Sato, Tomohiro Matsumoto
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Patent number: 8987505Abstract: An alternative method for efficiently producing lactic acids from a carbohydrate-containing raw material such as cellulose is provided. The method for producing lactic acid and/or lactic acid ester comprises performing heat treatment on a carbohydrate-containing raw material in a solvent containing a catalyst, wherein the catalyst is at least one type of compound selected from the group consisting of a tin compound, an indium compound, and a rhenium compound, and the solvent contains water and/or alcohol.Type: GrantFiled: March 31, 2011Date of Patent: March 24, 2015Assignees: Nippon Shokubai Co., Ltd, National Institute of Advanced Industrial Science and TechnologyInventors: Kenichi Tominaga, Atsushi Mori, Kazuhiko Satoh, Shigeru Shimada, Hideaki Tsuneki, Yoshiaki Hirano
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Publication number: 20150014669Abstract: A metal complex exhibits blue light emission of high color purity and has a color purity of small temperature dependence, particularly in the blue region. Specifically, the metal complex is represented by Formula (1a): wherein M is a metal atom; R0 is a divalent linking group; each j independently represents 0 or 1; RP1, RP2, RP3, RP4 and RP6 each independently represents a hydrogen atom or the like; RP5 represents a halogen atom or the like; m is an integer of from 1 to 3, n is an integer of from 0 to 2, and m+n is 2 or 3; and the portion represented by Formula (2): represents a bidentate ligand; wherein Rx and Ry are an atom bonding to the metal atom M, and each independently represents a carbon atom, an oxygen atom or a nitrogen atom.Type: ApplicationFiled: January 10, 2013Publication date: January 15, 2015Inventors: Nobuhiko Akino, Taichi Abe, Hideo Konno, Shigeru Shimada, Kazuhiko Sato
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Publication number: 20140374727Abstract: A highly stable metal complex useful for the manufacture of a light-emitting device has an excellent lifetime property, particularly in a blue region, specifically a metal complex represented by Formula (1): wherein M is a metal atom; each R0 independently represents a divalent linking group; i and j each independently represent 0 or 1; RP1, RP2, RP3, RP4, RP5 and RP6 resent each independently rep a hydrogen atom and the like, with a proviso that at least one of RP1, RP2, RP3, RP4, RP5 and RP6 is a dendron; m is an integer of from 1 to 3, n is an integer of from 0 to 2, and m+n is 2 or 3; and the portion represented by Formula (2): represents a bidentate ligand; wherein Rx and Ry are an atom bonding to the metal atom M, and each independently represents a carbon atom and the like.Type: ApplicationFiled: January 10, 2013Publication date: December 25, 2014Inventors: Nobuhiko Akino, Taichi Abe, Hideo Konno, Shigeru Shimada, Kazuhiko Sato