Patents by Inventor Souichi Orita
Souichi Orita 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: 9340472Abstract: Disclosed is a method for producing a conjugated diene by subjecting a monoolefin having a carbon atom number of 4 or more and an oxygen gas to an oxidative dehydrogenation reaction by using a molybdenum-containing metal oxide catalyst under heat removal with a coolant, wherein an amount of molybdenum adhered onto a cooling heat transfer surface within a reactor is kept at not more than 20 mg/m2, or not only a surface roughness Ra of a cooling heat transfer surface within a reactor is not more than 3 ?m, but a temperature difference between a reaction temperature and a coolant temperature is in the range of from 5 to 220° C.Type: GrantFiled: September 9, 2013Date of Patent: May 17, 2016Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Hiroshi Kameo, Hidenobu Kajitani, Kazuyuki Iwakai, Hiroshi Takeo, Souichi Orita, Takeshi Takeuchi
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Publication number: 20140012057Abstract: Disclosed is a method for producing a conjugated diene by subjecting a monoolefin having a carbon atom number of 4 or more and an oxygen gas to an oxidative dehydrogenation reaction by using a molybdenum-containing metal oxide catalyst under heat removal with a coolant, wherein an amount of molybdenum adhered onto a cooling heat transfer surface within a reactor is kept at not more than 20 mg/m2, or not only a surface roughness Ra of a cooling heat transfer surface within a reactor is not more than 3 ?m, but a temperature difference between a reaction temperature and a coolant temperature is in the range of from 5 to 220° C.Type: ApplicationFiled: September 9, 2013Publication date: January 9, 2014Applicant: Mitsubishi Chemical CorporationInventors: Hiroshi KAMEO, Hidenobu Kajitani, Kazuyuki Iwakai, Hiroshi Takeo, Souichi Orita, Takeshi Takeuchi
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Publication number: 20120130137Abstract: The present invention relates to a process of producing a conjugated diene including a step of mixing a raw material gas containing a monoolefin having a carbon atom number of 4 or more with a molecular oxygen-containing gas and supplying the mixture into a reactor, and a step of obtaining a corresponding conjugated diene-containing product gas produced by the oxidative dehydrogenation reaction of the monoolefin having a carbon atom number of 4 or more in the presence of a catalyst, wherein the concentration of a combustible gas in the gas supplied to the reactor is not less than the upper explosion limit and the oxygen concentration in the product gas is from 2.5 to 8.0 vol %.Type: ApplicationFiled: November 28, 2011Publication date: May 24, 2012Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Souichi ORITA, Hiroshi Takeo, Masaru Utsunomiya, Takuma Nishio, Hiroyuki Yagi, Nariyasu Kanuka
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Patent number: 6492532Abstract: The present invention provides a method for producing a carbonyl compound by dehydrogenating an alcohol. Namely, it relates to a method for producing a carbonyl compound, which comprises dehydrogenating an alcohol in the presence of a complex compound catalyst comprising ruthenium and an organic phosphine wherein aliphatic carbons are bonded to two or more of the three bonding hands of the phosphorus atom.Type: GrantFiled: August 21, 2001Date of Patent: December 10, 2002Assignee: Mitsubishi Chemical CorporationInventors: Masaru Utsunomiya, Kazunari Takahashi, Yoko Seto, Souichi Orita, Souichi Amano
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Patent number: 6429316Abstract: Disclosed is a process for preparing a pyrrolidone derivative, which comprises allowing at least one of &ggr;-butyrolactone, 4-hydroxybutyric acid, and a low-molecular polymer of 4-hydroxybutyric acid to react with an alkylamine, wherein (i) the content of a primary amine in said alkylamine is 85% by weight or lower, and (ii) the molar ratio of the total amount of the charged primary and secondary amines to the total amount of the charged &ggr;-butyrolactone, 4-hydroxybutyric acid, and low-molecular 4-hydroxybutyric acid polymers satisfies formula: 1.0≦(A1+A2/2.5)/(B1+B2+B3) wherein A1, A2, B1, B2, and B3 represent the molar amounts of a primary amine, a secondary amine, &ggr;-butyrolactone, 4-hydroxybutyric acid, and low-molecular 4-hydroxybutyric acid polymers, respectively.Type: GrantFiled: November 23, 1999Date of Patent: August 6, 2002Assignee: Mitsubishi Chemical CorporationInventors: Kazunari Takahashi, Yoko Seto, Masaru Utsunomiya, Souichi Orita, Kazutaka Maruyama, Tomonori Okubi
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Publication number: 20020035270Abstract: Disclosed is a process for preparing a pyrrolidone derivative, which comprises allowing at least one of &ggr;-butyrolactone, 4-hydroxybutyric acid, and a low-molecular polymer of 4-hydroxybutyric acid to react with an alkylamine, wherein (i) the content of a primary amine in said alkylamine is 85% by weight or lower, and (ii) the molar ratio of the total amount of the charged primary and secondary amines to the total amount of the charged &ggr;-butyrolactone, 4-hydroxybutyric acid, and low-molecular 4hydroxybutyric acid polymers satisfies formula:Type: ApplicationFiled: November 23, 1999Publication date: March 21, 2002Inventors: KAZUNARI TAKAHASHI, YOKO SETO, MASARU UTSUNOMIYA, SOUICHI ORITA, KAZUTAKA MARUYAMA, TOMONORI OKUBI
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Publication number: 20020002289Abstract: The present invention provides a method for producing a carbonyl compound by dehydrogenating an alcohol. Namely, it relates to a method for producing a carbonyl compound, which comprises dehydrogenating an alcohol in the presence of a complex compound catalyst comprising ruthenium and an organic phosphine wherein aliphatic carbons are bonded to two or more of the three bonding hands of the phosphorus atom.Type: ApplicationFiled: August 21, 2001Publication date: January 3, 2002Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Masaru Utsunomiya, Kazunari Takahashi, Yoko Seto, Souichi Orita, Souichi Amano
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Patent number: 5468419Abstract: A C.sub.9 alcohol mixture for plasticizer obtained by the hydroformylation and hydrogenation of a C.sub.8 olefin mixture as the starting material obtained by the dimerization of a butene fraction, said alcohol mixture comprising from 8 to 50% by weight of a first group component having a retention time not longer than the retention time of isobutyl n-caprylate, from 8 to 40% by weight of a second group component having a retention time longer than that of isobutyl n-caprylate and not longer than that of methyl n-caprate and from 20 to 80% by weight of a third group component having a retention time longer than that of methyl n-caprate, as divided into such three components by gas chromatography using a capillary column packed with a polyethylene glycol having a number average molecular weight of 15,000 to 20,000 as an isomer separating agent.Type: GrantFiled: August 5, 1991Date of Patent: November 21, 1995Assignee: Mitsubishi Chemical CorporationInventors: Chihiro Miyazawa, Souichi Orita, Akio Tsuboi
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Patent number: 5189105Abstract: A C.sub.9 alcohol mixture used to make a plasticizer obtained by the hydroformylation and hydrogenation of a C.sub.8 olefin mixture as the starting material obtained by the dimerization of a butene fraction, said alcohol mixture comprising from 8 to 50% by weight of a first group component having a retention time not longer than the retention time of isobutyl n-caprylate, from 8 to 40% by weight of a second group component having a retention time longer than that of isobutyl n-caprylate and not longer than that of methyl n-caprate and from 20 to 80% by weight of a third group component having a retention time longer than that of methyl n-caprate, as divided into such three components by gas chromatography using a capillary column packed with a polyethylene glycol having a number average molecular weight of 15,000 to 20,000 as an isomer separating agent.Type: GrantFiled: August 1, 1991Date of Patent: February 23, 1993Assignee: Mitsubishi Chemical Industries LimitedInventors: Chihiro Miyazawa, Souichi Orita, Akio Tsuboi