Patents by Inventor Fuyuhiko Sakyu
Fuyuhiko Sakyu 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: 11441821Abstract: It is an object of the present invention to provide a heat pump that can use, as a refrigerant, a substance with which a geometric isomer exists, and a method for designing the same. The present invention is a method for designing a heat pump (1) whose closed circuit configured by connecting a compressor (2), a condenser (3), an expansion valve (4), and an evaporator (5) in this order is filled with a refrigerant containing a refrigerant substance with which a geometric isomer may exist, the method including obtaining an upper limit of stable temperature at which isomerization of the refrigerant substance does not proceed, and setting an upper limit usage temperature of the heat pump (1) so as not to exceed the upper limit of the stable temperature.Type: GrantFiled: June 28, 2018Date of Patent: September 13, 2022Assignees: Mitsubishi Heavy Industries Thermal System, Ltd., Central Glass Co., Ltd.Inventors: Ryosuke Suemitsu, Kenji Ueda, Yasushi Hasegawa, Kazuki Wajima, Yoshinori Akamatsu, Fuyuhiko Sakyu, Kanako Osafune
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Publication number: 20210238507Abstract: One of the problems is to provide a solvent composition which has a little adverse effect on the global environment and has excellent stability when a compound having a perfluoropolyether (PFPE) group is in a solution state. In an embodiment, the problem is solved by providing a solvent composition for dissolving a compound having a perfluoropolyether (PFPE) group includes Z-1,2-dichloro-3,3,3-trifluoropropene (1223xd(Z)) as a main component.Type: ApplicationFiled: January 14, 2021Publication date: August 5, 2021Applicant: CENTRAL GLASS COMPANY, LIMITEDInventors: Kanako OSAFUNE, Fuyuhiko SAKYU, Michitaka OOTANI
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Patent number: 10815174Abstract: A storage method of HCFO-1233zd (Z) according to an embodiment of the present invention, includes using a storage container having a liquid-contact portion thereof. The liquid-contact portion is formed of a material selected from the group consisting of epoxy-phenolic resin, phenolic resin, phenolic-butyral resin, stainless steel, iron phosphate, zinc phosphate and glass.Type: GrantFiled: January 31, 2019Date of Patent: October 27, 2020Assignee: CENTRAL GLASS COMPANY, LIMITEDInventors: Naoto Takada, Masahiko Tani, Hideaki Imura, Koji Ueda, Yoshio Nishiguchi, Fuyuhiko Sakyu
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Publication number: 20190390878Abstract: It is an object of the present invention to provide a heat pump that can use, as a refrigerant, a substance with which a geometric isomer exists, and a method for designing the same. The present invention is a method for designing a heat pump (1) whose closed circuit configured by connecting a compressor (2), a condenser (3), an expansion valve (4), and an evaporator (5) in this order is filled with a refrigerant containing a refrigerant substance with which a geometric isomer may exist, the method including obtaining an upper limit of stable temperature at which isomerization of the refrigerant substance does not proceed, and setting an upper limit usage temperature of the heat pump (1) so as not to exceed the upper limit of the stable temperature.Type: ApplicationFiled: June 28, 2018Publication date: December 26, 2019Applicants: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., CENTRAL GLASS COMPANY, LTDInventors: Ryosuke SUEMITSU, Kenji UEDA, Yasushi HASEGAWA, Kazuki WAJIMA, Yoshinori AKAMATSU, Fuyuhiko SAKYU, Kanako OSAFUNE
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Patent number: 10465959Abstract: A heat pump device and an organic Rankine cycle device that are capable of maintaining a stable thermal cycle even when an HFO or HCFO is used as the refrigerant. The refrigerant circulation device uses a refrigerant, wherein the refrigerant includes a hydrofluoroolefin or hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, and a reaction suppression unit which suppresses an isomerization reaction of the refrigerant is provided within the refrigerant circulation circuit.Type: GrantFiled: October 23, 2014Date of Patent: November 5, 2019Assignees: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., CENTRAL GLASS CO., LTD.Inventors: Kenji Ueda, Naoki Kobayashi, Yoshinori Akamatsu, Fuyuhiko Sakyu, Yoshio Nishiguchi
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Patent number: 10443912Abstract: The present invention provides a heat pump device and an organic Rankine cycle device that are capable of maintaining a stable thermal cycle even when an HFO is used as the refrigerant in an environment in which the operating temperature reaches a high temperature. The refrigerant circulation device is filled with a refrigerant comprising a hydrofluoroolefin or hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, and has a region in the refrigerant circulation circuit where the operating temperature of the refrigerant reaches 175° C. or higher, wherein an acid suppression unit which suppresses any increase in the acid concentration in the refrigerant is provided in the region where the operating temperature of the refrigerant can reach 175° C.Type: GrantFiled: October 23, 2014Date of Patent: October 15, 2019Assignees: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., CENTRAL GLASS CO., LTD.Inventors: Kenji Ueda, Naoki Kobayashi, Yoshinori Akamatsu, Fuyuhiko Sakyu, Yoshio Nishiguchi
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Publication number: 20190169103Abstract: A storage method of HCFO-1233zd (Z) according to an embodiment of the present invention, includes using a storage container having a liquid-contact portion thereof. The liquid-contact portion is formed of a material selected from the group consisting of epoxy-phenolic resin, phenolic resin, phenolic-butyral resin, stainless steel, iron phosphate, zinc phosphate and glass.Type: ApplicationFiled: January 31, 2019Publication date: June 6, 2019Inventors: Naoto TAKADA, Masahiko TANI, Hideaki IMURA, Koji UEDA, Yoshio NISHIGUCHI, Fuyuhiko SAKYU
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Publication number: 20180347860Abstract: An object of the present invention is to provide a heat source machine that can reduce the environmental load and can output the thermal energy with high temperature, and a method for operating the heat source machine. A heat source machine of the present invention includes a centrifugal compressor, condensers, expansion valves, and an evaporator, in which a refrigerant enclosed in a refrigerant circulation circuit configured by sequentially connecting the centrifugal compressor, the condensers, the expansion valves, and the evaporator contains a composition A, a composition B, or a composition C, the composition A has 4 or 5 carbon atoms, 6 or more fluorine atoms, and one or more oxygen atoms, the composition B has 4 or 5 carbon atoms and 6 or more fluorine atoms, the composition C has 3 carbon atoms, 2 chlorine atoms, 3 fluorine atoms, and an intramolecular double bond, and the composition A, the composition B, or the composition C has a boiling point of 20° C. or more and a critical temperature of 180° C.Type: ApplicationFiled: February 9, 2017Publication date: December 6, 2018Applicants: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., CENTRAL GLASS COMPANY, LIMITED.Inventors: Kazuki WAJIMA, Noriyuki MATSUKURA, Kenji UEDA, Naoki KOBAYASHI, Ryosuke SUEMITSU, Yoshinori AKAMATSU, Fuyuhiko SAKYU, Kanako OSAFUNE, Masanori TAMURA, Hiroyuki SUDA, Junji MIZUKADO, Kenji TAKIZAWA, Liang CHEN, Heng-dao QUAN
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Patent number: 9932282Abstract: A method for producing 1-chloro-3,3,3-trifluoropropene efficiently from an intermediate product having a low reactivity is provided. A method for producing trans-1-chloro-3,3,3-trifluoropropene comprising reacting a halogenated hydrocarbon compound having 3 carbon atoms represented by Formula (1) shown below in a gas phase with hydrogen fluoride in the presence of chlorine is provided. C3HXClYFZ (1) wherein X is 2 or 3; and when X=2, Y is an integer from 1 to 4, Z is an integer from 0 to 3, and Y+Z=4; and when X=3, Y is an integer from 1 to 5, Z is an integer from 0 to 4, and Y+Z=5; provided that Formula (1) shown above represents a halogenated hydrocarbon compound having 3 carbon atoms excluding trans-1-chloro-3,3,3-trifluoropropene.Type: GrantFiled: January 6, 2017Date of Patent: April 3, 2018Assignee: CENTRAL GLASS COMPANY, LIMITEDInventors: Satoru Okamoto, Fuyuhiko Sakyu, Masatomi Kanai, Takamasa Kitamoto
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Publication number: 20170113986Abstract: A method for producing 1-chloro-3,3,3-trifluoropropene efficiently from an intermediate product having a low reactivity is provided. A method for producing trans-1-chloro-3,3,3-trifluoropropene comprising reacting a halogenated hydrocarbon compound having 3 carbon atoms represented by Formula (1) shown below in a gas phase with hydrogen fluoride in the presence of chlorine is provided. C3HXClYFZ (1) wherein X is 2 or 3; and when X=2, Y is an integer from 1 to 4, Z is an integer from 0 to 3, and Y+Z=4; and when X=3, Y is an integer from 1 to 5, Z is an integer from 0 to 4, and Y+Z=5; provided that Formula (1) shown above represents a halogenated hydrocarbon compound having 3 carbon atoms excluding trans-1-chloro-3,3,3-trifluoropropene.Type: ApplicationFiled: January 6, 2017Publication date: April 27, 2017Inventors: Satoru OKAMOTO, Fuyuhiko SAKYU, Masatomi KANAI, Takamasa KITAMOTO
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Publication number: 20160200955Abstract: The present invention provides a heat pump device and an organic Rankine cycle device that are capable of maintaining a stable thermal cycle even when an HFO or HCFO is used as the refrigerant. The refrigerant circulation device uses a refrigerant, wherein the refrigerant comprises a hydrofluoroolefin or hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, and a reaction suppression unit which suppresses an isomerization reaction of the refrigerant is provided within the refrigerant circulation circuit.Type: ApplicationFiled: October 23, 2014Publication date: July 14, 2016Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., CENTRAL GLASS CO., LTD.Inventors: Kenji UEDA, Naoki KOBAYASHI, Yoshinori AKAMATSU, Fuyuhiko SAKYU, Yoshio NISHIGUCHI
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Publication number: 20160201958Abstract: The present invention provides a heat pump device and an organic Rankine cycle device that are capable of maintaining a stable thermal cycle even when an HFO is used as the refrigerant in an environment in which the operating temperature reaches a high temperature. The refrigerant circulation device is filled with a refrigerant comprising a hydrofluoroolefin or hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, and has a region in the refrigerant circulation circuit where the operating temperature of the refrigerant reaches 175° C. or higher, wherein an acid suppression unit which suppresses any increase in the acid concentration in the refrigerant is provided in the region where the operating temperature of the refrigerant can reach 175° C.Type: ApplicationFiled: October 23, 2014Publication date: July 14, 2016Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., CENTRAL GLASS CO., LTD.Inventors: Kenji UEDA, Naoki KOBAYASHI, Yoshinori AKAMATSU, Fuyuhiko SAKYU, Yoshio NISHIGUCHI
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Patent number: 9365472Abstract: A method for producing 1234Z from 1234E while generation of 245fa as a byproduct is suppressed. The method for producing cis-1,3,3,3-tetrafluoropropene includes putting trans-1,3,3,3-tetrafluoropropene into contact with a catalyst. The trans-1,3,3,3-tetrafluoropropene is put into contact with the catalyst at a reaction temperature of higher than or equal to 200° C. and lower than or equal to 550° C. for a contact time of longer than or equal to 0.01 seconds and shorter than or equal to 500 seconds.Type: GrantFiled: December 26, 2014Date of Patent: June 14, 2016Assignee: CENTRAL GLASS COMPANY, LTD.Inventors: Satoru Okamoto, Naoto Takada, Fuyuhiko Sakyu, Takamasa Kitamoto, Takuya Tonomura, Masatomi Kanai
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Patent number: 9359274Abstract: Provided is a method for causing a dehydrofluorination reaction of 1,1,1,3,3-pentafluoropropane in the gas phase and in the presence of a catalyst thereby producing 1,3,3,3-tetrafluoropropene. In this method, the reaction is carried out at a pressure inside the reaction system of from 0.001 to 90 kPa (absolute pressure) at a reaction temperature ranging from 250 to 600° C.Type: GrantFiled: June 27, 2013Date of Patent: June 7, 2016Assignee: Centeral Glass Company, LimitedInventors: Satoshi Yoshikawa, Fuyuhiko Sakyu, Naoto Takada
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Patent number: 9221732Abstract: A separation method of 1-chloro-3,3,3-tetraluofopropene and hydrogen fluoride according to the present invention includes reducing the hydrogen chloride content of a mixture containing hydrogen chloride, 1-chloro-3,3,3-tetrafluoropropene and hydrogen fluoride, thereby causing phase separation of the mixture so as to obtain an upper phase predominantly containing the hydrogen fluoride and a lower phase predominantly containing the 1-chloro-3,3,3-tetrafluoropropene. This separation method is industrially economically advantageous since the 1-chloro-3,3,3-tetraluofopropene and the hydrogen fluoride can be separated rapidly by simple operation.Type: GrantFiled: July 5, 2013Date of Patent: December 29, 2015Assignee: Central Glass Company, LimitedInventors: Satoru Okamoto, Satoshi Yoshikawa, Fuyuhiko Sakyu
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Patent number: 9221731Abstract: A method for producing a desired isomer of 1-chloro-3,3,3-trifluoro-1-propene or a desired isomer of 1,3,3,3-tetrafluoropropene at a high conversion ratio with no use of a solid catalyst is provided. Since no solid catalyst is used, a desired isomer of 1-chloro-3,3,3-trifluoro-1-propene and a desired isomer of 1,3,3,3-tetrafluoropropene can be stably obtained with no undesired possibility that the solid catalyst is deteriorated due to coking or the like caused as a result of long-time use thereof.Type: GrantFiled: December 9, 2014Date of Patent: December 29, 2015Assignee: CENTRAL GLASS COMPANY, LIMITEDInventors: Hideaki Imura, Satoru Okamoto, Masamune Okamoto, Naoto Takada, Fuyuhiko Sakyu
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Publication number: 20150321978Abstract: Provided is a method for causing a dehydrofluorination reaction of 1,1,1,3,3-pentafluoropropane in the gas phase and in the presence of a catalyst thereby producing 1,3,3,3-tetrafluoropropene. In this method, the reaction is carried out at a pressure inside the reaction system of from 0.001 to 90 kPa (absolute pressure) at a reaction temperature ranging from 250 to 600° C.Type: ApplicationFiled: June 27, 2013Publication date: November 12, 2015Inventors: Satoshi YOSHIKAWA, Fuyuhiko SAKYU, Naoto TAKADA
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Patent number: 9115044Abstract: Provided is a method for producing trans-1-chloro-3,3,3-trifluoropropene usable as a raw material for a foaming agent for a hard polyurethane foam, a solvent, a cleaning agent, a cooling medium, a working fluid, a propellant, a fluorinated resin, etc., the method involving a step of bringing cis-1-chloro-3,3,3-trifluoropropene into contact with a catalyst, wherein the catalyst includes a fluorinated metal oxide or a metal fluoride each produced by applying a fluorination treatment to a metal oxide containing one kind or two or more kinds of metals and containing aluminum atoms that make up 50 at. % or more of metal atoms to thereby substitute some or all of oxygen atoms in the metal oxide with fluorine atom(s), wherein the fluorinated metal oxide or the metal fluoride is a compound produced through a drying treatment at 400 to 600° C.Type: GrantFiled: November 8, 2012Date of Patent: August 25, 2015Assignee: Central Glass Company, LimitedInventors: Satoru Okamoto, Fuyuhiko Sakyu
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Patent number: 9090530Abstract: A method for producing 1,2-dichloro-3,3,3-trifluoropropene of the present invention includes reacting 1,2-dichloro-1-halogeno-3,3,3-trifluoropropane with a base in a liquid phase; and extracting generated 1,2-dichloro-3,3,3-trifluoropropene to the outside of a reaction system to recover while the reaction is continued. According to the present invention, 1,2-dichloro-3,3,3-trifluoropropene is obtained at a high yield by a simple method. Thus, 1,2-dichloro-3,3,3-trifluoropropene is produced in an industrial scale.Type: GrantFiled: March 19, 2015Date of Patent: July 28, 2015Assignee: CENTRAL GLASS COMPANY, LIMITEDInventors: Yoshio Nishiguchi, Satoru Okamoto, Fuyuhiko Sakyu
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Patent number: 9090529Abstract: The present invention has an object of providing a method for producing 1,2-dichloro-3,3,3-trifluoropropene by a vapor-phase reaction easily and in an industrial scale. A method for producing 1,2-dichloro-3,3,3-trifluoropropene of the present invention includes putting 1,2-dichloro-1-halogeno-3,3,3-trifluoropropane with an activated carbon catalyst in a vapor phase. According to the present invention, 1,2-dichloro-3,3,3-trifluoropropene is produced in an industrial scale at a high yield by use of 1,2-dichloro-1-halogeno-3,3,3-trifluoropropane, which is available at low cost, as a material.Type: GrantFiled: March 19, 2015Date of Patent: July 28, 2015Assignee: CENTRAL GLASS COMPANY, LIMITEDInventors: Yoshio Nishiguchi, Satoru Okamoto, Fuyuhiko Sakyu