Patents by Inventor Satoshi Tokuno
Satoshi Tokuno 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: 20240043728Abstract: The present disclosure aims to provide a novel refrigerant comprising HFO-1132(E).Type: ApplicationFiled: July 27, 2023Publication date: February 8, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mitsushi ITANO, Shun OHKUBO, Satoshi TOKUNO, Tomoyuki GOTOU, Takashi YOSHIMURA, Takashi USUI, Tatsumi TSUCHIYA, Tsubasa NAKAUE
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Publication number: 20240010896Abstract: An object is to suppress disproportionation in a refrigerant comprising HFO-1132(E). Provided as a means for a solution is a method for suppressing a disproportionation reaction of HFO-1132(E), the method comprising operating a refrigeration cycle using a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and difluoromethane (R32).Type: ApplicationFiled: September 8, 2023Publication date: January 11, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mitsushi ITANO, Shun OHKUBO, Satoshi TOKUNO, Tomoyuki GOTOU, Takashi USUI, Takashi YOSHIMURA
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Publication number: 20230174836Abstract: An object is to provide a novel low-GWP mixed refrigerant. Provided is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroiodomethane (CF3I), 2,3,3,3-tetrafluoro-1-propene (R1234yf), and difluoromethane (R32).Type: ApplicationFiled: January 27, 2023Publication date: June 8, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mitsushi ITANO, Shun OHKUBO, Satoshi TOKUNO, Kenji GOBOU
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Publication number: 20230151257Abstract: An object is to provide a novel low-GWP mixed refrigerant. Provided is a composition comprising a refrigerant, the refrigerant comprising difluoromethane (R32), trans-1,2-difluoroethylene (HFO-1132(E)), 1,3,3,3-tetrafluoropropene (R1234ze), and 1,1-difluoroethylene (HFO-1132a).Type: ApplicationFiled: January 19, 2023Publication date: May 18, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mitsushi ITANO, Shun OHKUBO, Daisuke KARUBE, Satoshi TOKUNO
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Publication number: 20230146651Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method that uses a composition as a refrigerant in a compressor, in which the composition includes one or more compounds selected from the group of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the flow rate of the refrigerant flowing through a region around an ignition energy generation portion in the compressor under a predetermined high-pressure condition is greater than or equal to 1 m/s.Type: ApplicationFiled: December 30, 2022Publication date: May 11, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Tomoyuki GOTOU, Takashi YOSHIMURA, Takashi USUI, Yuuko ITOU, Yuka WATANABE, Takuma IWASAKA, Youhei TAKAKURA, Yuuki YOTSUMOTO, Satoshi TOKUNO, Ryohei DEGUCHI
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Publication number: 20230135967Abstract: An object is to provide a novel multi-stage refrigeration apparatus. The object is achieved by a refrigeration apparatus comprising a user-side heat transfer cycle that includes a user-side compressor, a user-side heat exchanger, a user-side pressure-reducing device, and a user-side cascade heat exchanger, and that circulates a user-side refrigerant; a heat-source-side heat transfer cycle that includes a heat-source-side compressor, a heat-source-side heat exchanger, a heat-source-side pressure-reducing device, and a heat-source-side cascade heat exchanger, and that circulates a heat-source-side refrigerant; a cascade heat exchanger configured to exchange heat between the user-side refrigerant of a user-side condenser and the heat-source-side refrigerant of a heat-source-side evaporator; and a control device, the user-side refrigerant having a boiling point of -30° C. or more and 25° C. or less, and the heat-source-side refrigerant having a boiling point of -55° C. or more and less than -30° C.Type: ApplicationFiled: December 27, 2022Publication date: May 4, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shun OHKUBO, Tatsumi TSUCHIYA, Tsubasa NAKAUE, Takurou YAMADA, Satoshi TOKUNO
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Publication number: 20230139313Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method that uses a composition as a refrigerant in a compressor, in which the composition includes one or more compounds selected from the group of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the flow rate of the refrigerant flowing through a discharge pipe of the compressor under a predetermined high-pressure condition is greater than or equal to 1 m/s.Type: ApplicationFiled: December 29, 2022Publication date: May 4, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Tomoyuki GOTOU, Takashi YOSHIMURA, Takashi USUI, Yuuko ITOU, Yuka WATANABE, Takuma IWASAKA, Youhei TAKAKURA, Yuuki YOTSUMOTO, Satoshi TOKUNO, Ryohei DEGUCHI
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Publication number: 20220145155Abstract: Provided is a novel low-GWP mixed refrigerant. A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), 1,1-difluoroethylene (HFO-1132a), 2,3,3,3-tetrafluoro-l-propene (R1234yf), and difluoromethane (R32).Type: ApplicationFiled: December 22, 2021Publication date: May 12, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mitsushi ITANO, Shun OHKUBO, Daisuke KARUBE, Satoshi TOKUNO
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Publication number: 20220112416Abstract: An object is to provide a novel low-GWP mixed refrigerant. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)) and difluoromethane (R32), wherein HFO-1132(E) is present in an amount of 25 to 27 mass % based on the total of HFO-1132(E) and R32, and R32 is present in an amount of 73 to 75 mass % based on the total of HFO-1132(E) and R32.Type: ApplicationFiled: December 17, 2021Publication date: April 14, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mitsushi ITANO, Shun OHKUBO, Daisuke KARUBE, Satoshi TOKUNO
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Publication number: 20220112418Abstract: Provided is a novel low-GWP mixed refrigerant. A composition comprising a refrigerant, the refrigerant comprising 1,1-difluoroethylene (HFO-1132a) and difluoromethane (R32), wherein HFO-1132a is present in an amount of 26 to 40 mass % based on the total of HFO-1132a and R32, and R32 is present in an amount of 60 to 74 mass % based on the total of HFO-1132a and R32.Type: ApplicationFiled: December 22, 2021Publication date: April 14, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mitsushi ITANO, Shun OHKUBO, Daisuke KARUBE, Satoshi TOKUNO
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Patent number: 11053180Abstract: The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).Type: GrantFiled: April 10, 2020Date of Patent: July 6, 2021Assignees: DAIKIN INDUSTRIES, LTD., KYOTO UNIVERSITYInventors: Tatsuya Morikawa, Mana Shimokawa, Katsuki Fujiwara, Satoshi Tokuno, Masakazu Higuchi, Susumu Kitagawa
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Publication number: 20200239389Abstract: The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).Type: ApplicationFiled: April 10, 2020Publication date: July 30, 2020Applicants: DAIKIN INDUSTRIES, LTD., KYOTO UNIVERSITYInventors: Tatsuya Morikawa, Mana Shimokawa, Katsuki Fujiwara, Satoshi Tokuno, Masakazu Higuchi, Susumu Kitagawa
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Patent number: 10654775Abstract: The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).Type: GrantFiled: June 15, 2016Date of Patent: May 19, 2020Assignees: DAIKIN INDUSTRIES, LTD., KYOTO UNIVERSITYInventors: Tatsuya Morikawa, Mana Shimokawa, Katsuki Fujiwara, Satoshi Tokuno, Masakazu Higuchi, Susumu Kitagawa
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Publication number: 20180222823Abstract: The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).Type: ApplicationFiled: June 15, 2016Publication date: August 9, 2018Applicants: DAIKIN INDUSTRIES, LTD., KYOTO UNIVERSITYInventors: Tatsuya MORIKAWA, Mana SHIMOKAWA, Katsuki FUJIWARA, Satoshi TOKUNO, Masakazu HIGUCHI, Susumu KITAGAWA
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Patent number: 8826562Abstract: A former unit (20) as a drying apparatus includes a horizontally oriented main casing (21). Space inside the main casing (21) is divided into four irradiation zones (31-34). Each of the irradiation zones (31-34) contains one tray unit (10). Each of the tray units (10) contains four metallic transfer trays (14) aligned in the vertical direction, with a distance between the transfer trays (14) set to half a wavelength of a microwave (?/2) or larger. Each of the transfer trays (14) carries wet PTFE powder. In the irradiation zones (31-34), the tray units (10) sequentially move from the first irradiation zone (31) to the fourth irradiation zone (34), and the microwave is laterally applied to the transfer trays (14).Type: GrantFiled: February 27, 2008Date of Patent: September 9, 2014Assignee: Daikin Industries, Ltd.Inventors: Shinichirou Kobayashi, Tomonori Kikuno, Teruo Kido, Yasuhiro Utsumi, Takayuki Tanaka, Satoshi Tokuno
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Patent number: 8247505Abstract: The present invention provides a process for preparing a fluorine-containing elastomer in a high productivity comparable to that of non-iodine transfer polymerization process by carrying out an iodine transfer polymerization at high pressure. The present invention also provides a fluorine-containing elastomer prepared by this process, and fluorine-containing molded articles. The process is a batch copolymerization process conducted under conditions that the reduced temperature of the critical constant is at least 0.95 and the reduced pressure of the critical constant is at least 0.Type: GrantFiled: August 27, 2007Date of Patent: August 21, 2012Assignee: Daikin Industries, Ltd.Inventors: Yousuke Nishimura, Masaki Irie, Sadashige Irie, Manabu Fujisawa, Satoshi Tokuno, Mitsuru Kishine
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Publication number: 20100126035Abstract: A former unit (20) as a drying apparatus includes four irradiation zones (31-34) in a main casing (21). Each of the irradiation zones (31-34) contains one tray unit (10). Each of the tray units (10) contains four transfer trays (14) aligned in the vertical direction. Each of the transfer trays (14) carries wet PTFE powder. In the former unit (20), the tray units (10) sequentially move from the first irradiation zone (31) to the fourth irradiation zone (34). A microwave is applied to the transfer trays (14) in the tray unit (10) from the left in the first irradiation zone (31), from behind in the second irradiation zone (32), from the front in the third irradiation zone (33), and from the right in the fourth irradiation zone.Type: ApplicationFiled: February 27, 2008Publication date: May 27, 2010Inventors: Shinichirou Kobayashi, Tomonori Kikuno, Teruo Kido, Yasuhiro Utsumi, Takayuki Tanaka, Satoshi Tokuno
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Publication number: 20100005682Abstract: A former unit (20) as a drying apparatus includes a horizontally oriented main casing (21). Space inside the main casing (21) is divided into four irradiation zones (31-34). Each of the irradiation zones (31-34) contains one tray unit (10). Each of the tray units (10) contains four metallic transfer trays (14) aligned in the vertical direction, with a distance between the transfer trays (14) set to half a wavelength of a microwave (?/2) or larger. Each of the transfer trays (14) carries wet PTFE powder. In the irradiation zones (31-34), the tray units (10) sequentially move from the first irradiation zone (31) to the fourth irradiation zone (34), and the microwave is laterally applied to the transfer trays (14).Type: ApplicationFiled: February 27, 2008Publication date: January 14, 2010Inventors: Shinichirou Kobayashi, Tomonori Kikuno, Teruo Kido, Yasuhiro Utsumi, Takayuki Tanaka, Satoshi Tokuno
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Publication number: 20090326191Abstract: A semi-finished product obtained as a mixture of PTFE powder and water is put on conveyance trays (70) and is then input to a producing apparatus (10). In the producing apparatus (10), the conveyance trays (70) arranged vertically pass through a first drying zone (41), a second drying zone (42), and a heat treatment zone (43) in this order. In the first drying zone (41), the water contained in the semi-finished product is heated by a microwave to be evaporated. In the second drying zone (42), residual water in the semi-finished product is heated by hot wind to be evaporated. In the heat treatment zone (43), the temperature of dried PTFE powder is kept at approximately 160° C. The semi-finished product on each conveyance tray (70) passes through the three zones to be PTFE powder as a finished product.Type: ApplicationFiled: July 18, 2007Publication date: December 31, 2009Inventors: Shinichirou Kobayashi, Teruo Kido, Tomonori Kikuno, Yasuhiro Utsumi, Takayuki Tanaka, Satoshi Tokuno
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Patent number: 7566762Abstract: The present invention relates to a process for preparing a fluoropolymer containing at least one kind of fluoroolefin, which comprises carrying out polymerization in the presence of a surfactant represented by the formula (1): (wherein R1 and R2 may be the same or different respectively, and represent an alkyl group or an alkenyl group, R3 is a hydrogen atom, an alkyl group or an alkenyl group, the total carbon number of R1 to R3 is 2 to 25, L? is a group represented by —SO3?, —OSO3?, —PO3?, —OPO3? or —COO?, and M+ is a monovalent cation). Thereby, polymerization can be carried out with excellent production efficiency in the presence of a small amount of a surfactant, and a fluoropolymer can be prepared without lowering various physical properties such as water resistance by the surfactant.Type: GrantFiled: December 22, 2004Date of Patent: July 28, 2009Assignee: Daikin Industries, Ltd.Inventors: Masao Otsuka, Satoshi Tokuno, Katsuya Nakai