Patents by Inventor Takamasa Kikuchi
Takamasa Kikuchi 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: 11866551Abstract: The present invention provides a composition containing an electron-donating polymer (D) and an electron-withdrawing polymer (A), wherein the electron-donating polymer (D) has a constitutional unit represented by the following formula (1a), Y1a in the following formula (1a) is a divalent group represented by the following formula (3a), and the electron-withdrawing polymer (A) has a constitutional unit represented by the following formula (4a): wherein the symbols in the formulas are as described in the DESCRIPTION.Type: GrantFiled: February 8, 2019Date of Patent: January 9, 2024Assignees: NISSAN CHEMICAL CORPORATION, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masamichi Nishihara, Shiyan Feng, Byungchan Hwang, Liana Christiani, Kazunari Sasaki, Shoichi Kondo, Taichi Nakazawa, Takamasa Kikuchi
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Publication number: 20230355590Abstract: An isoxazoline-substituted benzamide compound, and the salt thereof. For example, a compound having the following formula: and pesticides characterized by containing the compound as an active ingredient.Type: ApplicationFiled: December 28, 2022Publication date: November 9, 2023Applicant: Nissan Chemical CorporationInventors: Takeshi Mita, Takamasa Kikuchi, Takashi Mizukoshi, Manabu Yaosaka, Mitsuaki Komoda, Shinji Takii
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Publication number: 20230295818Abstract: A method for producing ammonia involves producing ammonia from molecular nitrogen in a production apparatus for performing electrolysis by supplying electrons from a power source, protons from a proton source and molecular nitrogen from a device for supplying a nitrogen gas while in the presence of a solid catalyst and a complex in a cathode. For example, a molybdenum complex represented by formula (A1) or formula (B2) as the complex, and a platinum catalyst or a platinum catalyst/gold catalyst combination as the solid catalyst are used.Type: ApplicationFiled: August 16, 2021Publication date: September 21, 2023Applicants: THE UNIVERSITY OF TOKYO, NISSAN CHEMICAL CORPORATIONInventors: Yoshiaki NISHIBAYASHI, Kazuya ARASHIBA, Yuya ASHIDA, Shoichi KONDO, Takamasa KIKUCHI
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Publication number: 20230295813Abstract: A method for producing ammonia from nitrogen molecules, by supplying electrons from a power source, protons from a proton source, and nitrogen molecules from a device for supplying nitrogen gas, in the presence of a molecular catalyst and a solid catalyst at the cathode of a production apparatus that performs electrolysis. Regarding the molecular catalyst and the solid catalyst, bis(cyclopentadienyl)titanium dichloride, for example, is used as the molecular catalyst, and a metal catalyst, an oxide catalyst, or a combination thereof is used as the solid catalyst.Type: ApplicationFiled: August 16, 2021Publication date: September 21, 2023Applicant: NISSAN CHEMICAL CORPORATIONInventors: Shoichi KONDO, Takamasa KIKUCHI
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Publication number: 20230238545Abstract: A stable form which uses a carbon material having electrical conductivity as a raw material and that the electrical conductivity of the carbon material is retained and/or improved, and which improves the electricity generation properties when used in a catalyst layer for a fuel cell. The present invention is directed to, e.g., a calcined material of a mixture of an aromatic compound having a phenolic hydroxyl group and a carbon material having electrical conductivity.Type: ApplicationFiled: May 31, 2021Publication date: July 27, 2023Applicant: NISSAN CHEMICAL CORPORATIONInventors: Shoichi KONDO, Hirokazu KATO, Takamasa KIKUCHI, Norihito SHIGA
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Patent number: 11658309Abstract: A fuel cell is an ammonia fuel cell using an ammonia-containing fuel. A catalyst used for an anode of the fuel cell is a ruthenium complex having two first ligands and one second ligand, and the first ligand is pyridine or a condensed cyclic pyridine compound with or without a substituent, and the second ligand is 2,2?-bipyridyl-6,6?-dicarboxylic acid with or without a substituent on a pyridine ring.Type: GrantFiled: March 2, 2020Date of Patent: May 23, 2023Assignees: THE UNIVERSITY OF TOKYO, NISSAN CHEMICAL CORPORATIONInventors: Yoshiaki Nishibayashi, Kazunari Nakajima, Hiroki Toda, Shoichi Kondo, Takamasa Kikuchi
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Publication number: 20230002917Abstract: An ammonia production method is a method of producing ammonia from nitrogen molecule using electron supplied from a power supply in the presence of a complex and a proton source. The complex used is, for example, a molybdenum complex (1) that is carried on Merrifield resin.Type: ApplicationFiled: September 4, 2020Publication date: January 5, 2023Applicants: THE UNIVERSITY OF TOKYO, NISSAN CHEMICAL CORPORATIONInventors: Yoshiaki NISHIBAYASHI, Kazuya ARASHIBA, Yuya ASHIDA, Shoichi KONDO, Takamasa KIKUCHI
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Publication number: 20220173409Abstract: Provided is a material which can be used in a catalyst layer for a fuel cell and exhibits proton conductive properties. The present invention is directed to a carbon-based solid acid comprising a carbon material having a sulfonic acid group through a linker.Type: ApplicationFiled: March 23, 2020Publication date: June 2, 2022Applicant: NISSAN CHEMICAL CORPORATIONInventors: Shoichi KONDO, Taichi NAKAZAWA, Takamasa KIKUCHI, Yuki NOHARA, Mitsuyoshi KAWASHIMA
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Publication number: 20220158202Abstract: A fuel cell is an ammonia fuel cell using an ammonia-containing fuel. A catalyst used for an anode of the fuel cell is a ruthenium complex having two first ligands and one second ligand, and the first ligand is pyridine or a condensed cyclic pyridine compound with or without a substituent, and the second ligand is 2,2?-bipyridyl-6,6?-dicarboxylic acid with or without a substituent on a pyridine ring.Type: ApplicationFiled: March 2, 2020Publication date: May 19, 2022Applicants: THE UNIVERSITY OF TOKYO, NISSAN CHEMICAL CORPORATIONInventors: Yoshiaki NISHIBAYASHI, Kazunari NAKAJIMA, Hiroki TODA, Shoichi KONDO, Takamasa KIKUCHI
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Patent number: 11098161Abstract: A composition containing electron-donating polymer (D) having a structure represented by the following formula (1), and electron-withdrawing polymer (A) having a structure represented by the following formula (2): wherein definition of the symbols are as described in the DESCRIPTION is provided.Type: GrantFiled: October 3, 2017Date of Patent: August 24, 2021Assignees: NISSAN CHEMICAL CORPORATION, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masamichi Nishihara, Shiyan Feng, Liana Christiani, Kazunari Sasaki, Shoichi Kondo, Takahiro Kaseyama, Taichi Nakazawa, Takamasa Kikuchi
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Patent number: 11052355Abstract: A gas separation membrane containing a matrix resin and hyperbranched polymer- or dendrimer-bound, heteromorphous shaped silica nanoparticles, which are formed of heteromorphous shaped silica nanoparticles having surfaces onto which a hyperbranched polymer or a dendrimer is chemically added.Type: GrantFiled: August 21, 2017Date of Patent: July 6, 2021Assignees: NISSAN CHEMICAL CORPORATION, TOKYO METROPOLITAN UNIVERSITYInventors: Hiroyoshi Kawakami, Manabu Tanaka, Yuri Kameyama, Yuki Kudo, Hiroto Mikami, Tadayuki Isaji, Kazutoshi Odaka, Takamasa Kikuchi
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Publication number: 20210047464Abstract: The present invention provides a composition containing an electron-donating polymer (D) and an electron-withdrawing polymer (A), wherein the electron-donating polymer (D) has a constitutional unit represented by the following formula (1a), Y1a in the following formula (1a) is a divalent group represented by the following formula (3a), and the electron-withdrawing polymer (A) has a constitutional unit represented by the following formula (4a): wherein the symbols in the formulas are as described in the DESCRIPTION.Type: ApplicationFiled: February 8, 2019Publication date: February 18, 2021Applicants: NISSAN CHEMICAL CORPORATION, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masamichi NISHIHARA, Shiyan FENG, Byungchan HWANG, Liana CHRISTIANI, Kazunari SASAKI, Shoichi KONDO, Taichi NAKAZAWA, Takamasa KIKUCHI
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Patent number: 10906009Abstract: A method for producing a gas separation membrane, including the following steps: step (a): treating the surfaces of silica nanoparticles dispersed in a first solvent with a reactive functional group-containing compound, while nanoparticles are being dispersed in the solvent, to thereby prepare a first solvent dispersion of reactive functional group-modified silica nanoparticles; step (b): replacing the first solvent dispersion's dispersion medium of reactive functional group-modified silica nanoparticles prepared in step (a) with a second solvent without drying of dispersion medium, and then reacting functional group-modified silica nanoparticles with dendrimer-forming monomer or hyperbranched polymer-forming monomer in the second solvent's presence so that dendrimer or hyperbranched polymer is added to reactive functional group, to thereby prepare dendrimer- or hyperbranched polymer-bound silica nanoparticles; step (c): mixing dendrimer- or hyperbranched polymer-bound silica nanoparticles prepared in step (bType: GrantFiled: April 17, 2017Date of Patent: February 2, 2021Assignees: NISSAN CHEMICAL CORPORATION, TOKYO METROPOLITAN UNIVERSITYInventors: Hiroyoshi Kawakami, Manabu Tanaka, Yuri Kameyama, Azusa Osawa, Tadayuki Isaji, Takamasa Kikuchi
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Patent number: 10874645Abstract: A substituted alkenylbenzene compound of formula (4): wherein X1 is selected from the group consisting of a halogen atom, —SF5, C1-C6haloalkyl, hydroxy C1-C6haloalkyl, C1-C6alkoxy C1-C6haloalkyl, C3-C8halocycloalkyl, C1-C6haloalkoxy, C1-C3haloalkoxy C1-C3haloalkoxy, C1-C6haloalkylthio, C1-C6haloalkylsulfinyl and C1-C6haloalkylsulfonyl; X3 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, nitro, C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy and C1-C6alkylthio; X4 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, C1-C4alkyl, C1-C4alkoxy and C1-C4haloalkoxy; R3 is —C(R3a)(R3b)R3c, where R3a and R3b independently of each other are a halogen atom, or R3a and R3b together form 3- to 6-membered ring together with the carbon atom bonding them by forming a C2-C5haloalkylene chain, and R3c is selected from the group consisting of a hydrogen atom, halogen atom, C1-C5alkyl, C1-C5haloalkyl, C1-C4haloalkoxy and C1-C4haloalkylthio, with a proviso that in case where X1Type: GrantFiled: July 11, 2019Date of Patent: December 29, 2020Assignee: Nissan Chemical CorporationInventors: Takeshi Mita, Takamasa Kikuchi, Takashi Mizukoshi, Manabu Yaosaka, Mitsuaki Komoda, Shinji Takii
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Publication number: 20200155511Abstract: A substituted alkenylbenzene compound of formula (4): wherein X1 is selected from the group consisting of a halogen atom, —SF5, C1-C6haloalkyl, hydroxy C1-C6haloalkyl, C1-C6alkoxy C1-C6haloalkyl, C3-C8halocycloalkyl, C1-C6haloalkoxy, C1-C3haloalkoxy C1-C3haloalkoxy, C1-C6haloalkylthio, C1-C6haloalkylsulfinyl and C1-C6haloalkylsulfonyl; X3 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, nitro, C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy and C1-C6alkylthio; X4 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, C1-C4alkyl, C1-C4alkoxy and C1-C4haloalkoxy; R3 is —C(R3a)(R3b)R3c, where R3a and R3b independently of each other are a halogen atom, or R3a and R3b together form 3- to 6-membered ring together with the carbon atom bonding them by forming a C2-C5haloalkylene chain, and R3c is selected from the group consisting of a hydrogen atom, halogen atom, C1-C5alkyl, C1-C5haloalkyl, C1-C4haloalkoxy and C1-C4haloalkylthio, with a proviso that in case where X1Type: ApplicationFiled: December 10, 2019Publication date: May 21, 2020Applicant: NISSAN CHEMICAL CORPORATIONInventors: Takeshi MITA, Takamasa Kikuchi, Takashi Mizukoshi, Manabu Yaosaka, Mitsuaki Komoda, Shinji Takii
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Patent number: 10596157Abstract: A substituted alkenylbenzene compound of formula (4): wherein X1 is selected from the group consisting of a halogen atom, —SF5, C1-C6haloalkyl, hydroxy C1-C6haloalkyl, C1-C6alkoxy C1-C6haloalkyl, C3-C8halocycloalkyl, C1-C6haloalkoxy, C1-C3haloalkoxy C1-C3haloalkoxy, C1-C6haloalkylthio, C1-C6haloalkylsulfinyl and C1-C6haloalkylsulfonyl; X3 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, nitro, C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy and C1-C6alkylthio; X4 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, C1-C4alkoxy and C1-C4haloalkoxy; R3 is —C(R3a)(R3b)R3c, where R3a and R3b independently of each other are a halogen atom, or R3a and R3b together form 3- to 6-membered ring together with the carbon atom bonding them by forming a C2-C5haloalkylene chain, and R3c is selected from the group consisting of a hydrogen atom, halogen atom, C1-C5haloalkyl, C1-C4haloalkoxy and C1-C4haloalkylthio, with a proviso that in case where X1 is a fluorine atom, chloType: GrantFiled: May 7, 2018Date of Patent: March 24, 2020Assignee: Nissan Chemical CorporationInventors: Takeshi Mita, Takamasa Kikuchi, Takashi Mizukoshi, Manabu Yaosaka, Mitsuaki Komoda, Shinji Takii
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Publication number: 20200040137Abstract: provided is a composition containing electron-donating polymer (D) having a structure represented by the following formula (1), and electron-withdrawing polymer (A) having a structure represented by the following formula (2): wherein definition of the symbols are as described in the DESCRIPTION.Type: ApplicationFiled: October 3, 2017Publication date: February 6, 2020Applicants: NISSAN CHEMICAL CORPORATION, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masamichi NISHIHARA, Shiyan FENG, Liana CHRISTIANI, Kazunari SASAKI, Shoichi KONDO, Takahiro KASEYAMA, Taichi NAKAZAWA, Takamasa KIKUCHI
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Publication number: 20200000777Abstract: A substituted alkenylbenzene compound of formula (4): wherein X1 is selected from the group consisting of a halogen atom, —SF5, C1-C6haloalkyl, hydroxy C1-C6haloalkyl, C1-C6alkoxy C1-C6haloalkyl, C3-C8halocycloalkyl, C1-C6haloalkoxy, C1-C3haloalkoxy C1-C3haloalkoxy, C1-C6haloalkylthio, C1-C6haloalkylsulfinyl and C1-C6haloalkylsulfonyl; X3 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, nitro, C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy and C1-C6alkylthio; X4 is selected from the group consisting of a hydrogen atom, halogen atom, cyano, C1-C4alkyl, C1-C4alkoxy and C1-C4haloalkoxy; R3 is —C(R3a)(R3b)R3c, where R3a and R3b independently of each other are a halogen atom, or R3a and R3b together form 3- to 6-membered ring together with the carbon atom bonding them by forming a C2-C5haloalkylene chain, and R3c is selected from the group consisting of a hydrogen atom, halogen atom, C1-C5alkyl, C1-C5haloalkyl, C1-C4haloalkoxy and C1-C4haloalkylthio, with a proviso that in case where X1Type: ApplicationFiled: July 11, 2019Publication date: January 2, 2020Applicant: NISSAN CHEMICAL CORPORATIONInventors: Takeshi MITA, Takamasa KIKUCHI, Takashi MIZUKOSHI, Manabu YAOSAKA, Mitsuaki KOMODA, Shinji TAKII
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Publication number: 20190184345Abstract: A gas separation membrane containing a matrix resin and hyperbranched polymer- or dendrimer-bound, heteromorphous shaped silica nanoparticles, which are formed of heteromorphous shaped silica nanoparticles having surfaces onto which a hyperbranched polymer or a dendrimer is chemically added.Type: ApplicationFiled: August 21, 2017Publication date: June 20, 2019Applicants: NISSAN CHEMICAL CORPORATION, TOKYO METROPOLITAN UNIVERSITYInventors: Hiroyoshi KAWAKAMI, Manabu TANAKA, Yuri KAMEYAMA, Yuuki KUDO, Hiroto MIKAMI, Tadayuki ISAJI, Kazutoshi ODAKA, Takamasa KIKUCHI
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Publication number: 20190083942Abstract: A method for producing a gas separation membrane, including the following steps: step(a): treating the surfaces of silica nanoparticles dispersed in a first solvent with a reactive functional group-containing compound, while nanoparticles are being dispersed in the solvent, to thereby prepare a first solvent dispersion of reactive functional group-modified silica nanoparticles; step(b): replacing the first solvent dispersion's dispersion medium of reactive functional group-modified silica nanoparticles prepared in step(a) with a second solvent without drying of dispersion medium, and then reacting functional group-modified silica nanoparticles with dendrimer-forming monomer or hyperbranched polymer-forming monomer in the second solvent's presence so that dendrimer or hyperbranched polymer is added to reactive functional group, to thereby prepare dendrimer- or hyperbranched polymer-bound silica nanoparticles; step(c): mixing dendrimer- or hyperbranched polymer-bound silica nanoparticles prepared in step(b) witType: ApplicationFiled: April 17, 2017Publication date: March 21, 2019Applicants: NISSAN CHEMICAL CORPORATION, TOKYO METROPOLITAN UNIVERSITYInventors: Hiroyoshi KAWAKAMI, Manabu TANAKA, Yuri KAMEYAMA, Azusa OSAWA, Tadayuki ISAJI, Takamasa KIKUCHI