Patents by Inventor Yoshinao NAKAGAWA
Yoshinao NAKAGAWA 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).
-
Publication number: 20230339827Abstract: Provided is a method capable of producing an olefin with high selectivity and high yield using a vicinal diol as a raw material. A method for producing an olefin includes a step of reacting a compound including two adjacent carbon atoms each containing a hydroxy group with hydrogen and forming an olefin, and in this step, the reaction of the compound including two adjacent carbon atoms each containing a hydroxy group with the hydrogen proceeds in the presence of a catalyst under a condition substantially free of a solvent. The catalyst includes a carrier, at least one oxide supported on the carrier and selected from the group consisting of oxides of group-6 elements and oxides of group-7 elements, and at least one metal supported on the carrier and selected from the group consisting of silver, iridium, and gold.Type: ApplicationFiled: September 15, 2021Publication date: October 26, 2023Applicant: DAICEL CORPORATIONInventors: Yasuteru KAJIKAWA, Yuuichirou HIRAI, Keisuke ONO, Keiichi TOMISHIGE, Yoshinao NAKAGAWA
-
Publication number: 20230103719Abstract: An on-vehicle device according to the present disclosure includes: a driver identification means for identifying a driver; a road-to-be-traveled width measurement means for measuring a road-to-be-traveled width being the width of a road-to-be-traveled; a passable road width acquisition means for acquiring a passable road width being a road width passable by an own vehicle driven by a driver identified by the driver identification means; a first determination means for determining whether the road-to-be-traveled width is narrower than the passable road width; and a notification means for, when the road-to-be-traveled width is determined to be narrower than the passable road width by the first determination means, giving notification that a narrow road being a road-to-be-traveled the road-to-be-traveled width of which is determined to be narrower than the passable road width by the first determination means is impassable by an own vehicle driven by a driver identified by the driver identification means.Type: ApplicationFiled: July 6, 2020Publication date: April 6, 2023Applicant: NEC CorporationInventor: Yoshinao NAKAGAWA
-
Patent number: 11547984Abstract: The invention relates to a novel catalyst for hydrogenation for hydrogenating at least one of dicarboxylic acid or its acid anhydride. The catalyst for hydrogenation according to a first embodiment is obtained by supporting at least one of palladium or platinum, and cobalt on a carrier, and subjecting the resulting carrier to a reduction treatment at 400 K or higher. The catalyst for hydrogenation according to a second embodiment is obtained by supporting at least one of palladium or platinum, and molybdenum on a carrier, and subjecting the resulting carrier to a reduction treatment at 500 K or higher.Type: GrantFiled: July 6, 2018Date of Patent: January 10, 2023Assignee: TOYO TIRE CORPORATIONInventors: Norihiko Nakamura, Keiichi Tomishige, Yoshinao Nakagawa, Masazumi Tamura
-
Publication number: 20210205792Abstract: The invention relates to a novel catalyst for hydrogenation for hydrogenating at least one of dicarboxylic acid or its acid anhydride. The catalyst for hydrogenation according to a first embodiment is obtained by supporting at least one of palladium or platinum, and cobalt on a carrier, and subjecting the resulting carrier to a reduction treatment at 400 K or higher. The catalyst for hydrogenation according to a second embodiment is obtained by supporting at least one of palladium or platinum, and molybdenum on a carrier, and subjecting the resulting carrier to a reduction treatment at 500 K or higher.Type: ApplicationFiled: July 6, 2018Publication date: July 8, 2021Applicant: Toyo Tire CorporationInventors: Norihiko Nakamura, Keiichi Tomishige, Yoshinao Nakagawa, Masazumi Tamura
-
Patent number: 11040334Abstract: Provided is a catalyst for reduction reaction with which 1,4-butanediol or tetrahydrofuran can be obtained with higher selectivity than with the related art, using a raw material derived from biomass. The catalyst is used in a reduction reaction of 3,4-dihydroxytetrahydrofuran with hydrogen, wherein the catalyst contains metal catalysts (1) and (2) below; metal catalyst (1): a catalyst containing M1 and M2 below as metal species and supported on a carrier; and metal catalyst (2): a catalyst containing M1 below as a metal species and supported on a carrier; M1: one or more selected from the group consisting of iron and elements belonging to periods 4 to 6 and groups 5 to 7 of the periodic table; and M2: one or more selected from the group consisting of ruthenium, osmium, and elements belonging to periods 4 to 6 and groups 9 to 11 of the periodic table.Type: GrantFiled: December 28, 2017Date of Patent: June 22, 2021Assignee: DAICEL CORPORATIONInventors: Keiichi Tomishige, Yoshinao Nakagawa, Masazumi Tamura, Yuuichirou Hirai, Yasuteru Kajikawa, Keisuke Ono
-
Patent number: 10751704Abstract: A hydrogenation reaction catalyst used for a reaction of 1,4-anhydroerythritol and hydrogen to produce 3-hydroxytetrahydrofuran includes a carrier, at least one oxide selected from the group consisting of an oxide of a Group 6 element and an oxide of a Group 7 element, the oxide being supported on the carrier, and a metal other than a Group 6 element and a Group 7 element, the other metal being supported on the carrier. The amount of the oxide supported on the carrier in terms of a metal atom forming the oxide is 0.01 to 10% by weight based on the total amount of the oxide and the carrier being 100% by weight. The molar ratio in terms of metal of the other metal to the Group 6 element and Group 7 element forming the oxide [other metal/Group 6 element and Group 7 element] is 50/1 to 1/4.Type: GrantFiled: May 10, 2019Date of Patent: August 25, 2020Assignee: DAICEL CORPORATIONInventors: Keiichi Tomishige, Yoshinao Nakagawa, Yasuteru Kajikawa, Yuuichirou Hirai
-
Patent number: 10584092Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of dehydration reaction and significantly improves the reaction speed at a pressure close to normal pressure. Furthermore, the above-described production method is applied to a carbonate ester production method to provide a method for producing carbonate ester efficiently. The above-described objects are achieved by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses diphenylether.Type: GrantFiled: June 20, 2017Date of Patent: March 10, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., TOHOKU UNIVERSITY, NIPPON STEEL CORPORATION, NIPPON STEEL ENGINEERING CO., LTD.Inventors: Yousuke Shinkai, Hongyu Liu, Hidefumi Harada, Yoshinori Isahaya, Keiichi Tomishige, Yoshinao Nakagawa, Masazumi Tamura, Kimihito Suzuki, Yasuki Namiki
-
Publication number: 20190366304Abstract: Provided is a catalyst for reduction reaction with which 1,4-butanediol or tetrahydrofuran can be obtained with higher selectivity than with the related art, using a raw material derived from biomass. The catalyst is used in a reduction reaction of 3,4-dihydroxytetrahydrofuran with hydrogen, wherein the catalyst contains metal catalysts (1) and (2) below; metal catalyst (1): a catalyst containing M1 and M2 below as metal species and supported on a carrier; and metal catalyst (2): a catalyst containing M1 below as a metal species and supported on a carrier; M1: one or more selected from the group consisting of iron and elements belonging to periods 4 to 6 and groups 5 to 7 of the periodic table; and M2: one or more selected from the group consisting of ruthenium, osmium, and elements belonging to periods 4 to 6 and groups 9 to 11 of the periodic table.Type: ApplicationFiled: December 28, 2017Publication date: December 5, 2019Applicant: DAICEL CORPORATIONInventors: Keiichi TOMISHIGE, Yoshinao NAKAGAWA, Masazumi TAMURA, Yuuichirou HIRAI, Yasuteru KAJIKAWA, Keisuke ONO
-
Publication number: 20190262805Abstract: A hydrogenation reaction catalyst used for a reaction of 1,4-anhydroerythritol and hydrogen to produce 3-hydroxytetrahydrofuran includes a carrier, at least one oxide selected from the group consisting of an oxide of a Group 6 element and an oxide of a Group 7 element, the oxide being supported on the carrier, and a metal other than a Group 6 element and a Group 7 element, the other metal being supported on the carrier. The amount of the oxide supported on the carrier in terms of a metal atom forming the oxide is 0.01 to 10% by weight based on the total amount of the oxide and the carrier being 100% by weight. The molar ratio in terms of metal of the other metal to the Group 6 element and Group 7 element forming the oxide [other metal/Group 6 element and Group 7 element] is 50/1 to 1/4.Type: ApplicationFiled: May 10, 2019Publication date: August 29, 2019Applicant: DAICEL CORPORATIONInventors: Keiichi TOMISHIGE, Yoshinao NAKAGAWA, Yasuteru KAJIKAWA, Yuuichirou HIRAI
-
Publication number: 20190185408Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of dehydration reaction and significantly improves the reaction speed at a pressure close to normal pressure. Furthermore, the above-described production method is applied to a carbonate ester production method to provide a method for producing carbonate ester efficiently. The above-described objects are achieved by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses diphenylether.Type: ApplicationFiled: June 20, 2017Publication date: June 20, 2019Applicants: Mitsubishi Gas Chemical Company, Inc., Tohoku University, Nippon Steel & Sumitomo Metal Corporation, Nippon Steel & Sumikin Engineering Co., Ltd.Inventors: Yousuke SHINKAI, Hongyu LIU, Hidefumi HARADA, Yoshinori ISAHAYA, Keiichi TOMISHIGE, Yoshinao NAKAGAWA, Masazumi TAMURA, Kimihito SUZUKI, Yasuki NAMIKI
-
Publication number: 20150298101Abstract: An object of the present invention is to provide a method for producing 3-hydroxytetrahydrofuran that can be used as a raw material for 1,3-butane diol, using as a raw material a compound that can be derived from biomass. The present invention relates to a method for producing 3-hydroxytetrahydrofuran including a step of reacting 1,4-anhydroerythritol and hydrogen to produce 3-hydroxytetrahydrofuran. In the production method, the step of reacting 1,4-anhydroerythritol and hydrogen is preferably allowed to proceed in the presence of a catalyst comprising a carrier and at least one oxide selected from the group consisting of an oxide of a Group 6 element and an oxide of a Group 7 element, the oxide being supported on the carrier.Type: ApplicationFiled: October 30, 2013Publication date: October 22, 2015Applicant: DAICEL CORPORATIONInventors: Keiichi TOMISHIGE, Yoshinao NAKAGAWA, Yasuteru KAJIKAWA, Yuuichirou HIRAI