Patents by Inventor Takahiro Hoshida
Takahiro Hoshida 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: 20230313799Abstract: An electric compressor includes a compression member configured to compress fluid, an electric motor configured to drive the compression member, an inverter configured to drive the electric motor, a housing accommodating the compression member, the electric motor, and the inverter, and a soundproof cover covering the housing. The housing includes a plurality of housing elements. The soundproof cover has a facing portion facing the housing. The facing portion has a groove that surrounds a boundary between two of the housing elements that are adjacent to each other and is distant from the boundary.Type: ApplicationFiled: March 20, 2023Publication date: October 5, 2023Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Takahiro KATO, Ryuji WATANABE, Noritaka NISHIMORI, Takahiro HOSHIDA, Takayuki KATO
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Patent number: 10557103Abstract: The refrigerator lubricating oil of the present invention contains: a base oil containing, as a major component, a polyol ester (A) of a fatty acid (a1) that is a fatty acid having a number of carbon atoms of from 3 to 18 and a polyol (a2) that is selected from neopentyl glycol, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol, and dipentaerythritol; and a disulfide and/or trisulfide compound (B), and the disulfide and/or trisulfide compound (B) is blended in an amount of from 30 to 10,000 ppm by mass in terms of sulfur equivalent based on the total amount of the refrigerator lubricating oil.Type: GrantFiled: March 10, 2016Date of Patent: February 11, 2020Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Masato Kaneko, Takahiro Hoshida
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Patent number: 10435641Abstract: The mixed composition for a refrigerator of the present invention contains: a refrigerant containing at least one unsaturated fluorinated hydrocarbon compound selected from compounds represented by the following molecular formula (1): CpFrHs??(1) wherein p represents an integer of from 2 to 6; r represents an integer of from 1 to 11; and s represents an integer of from 1 to 11, provided that the compound has one or more carbon-carbon unsaturated bond in a molecule, and a refrigerator lubricating oil containing, as a major component, a polyol ester (A) of a fatty acid (a1) that is a fatty acid having a number of carbon atoms of from 9 to 16 and has a content of a fatty acid having a number of carbon atoms of 9 of 50% by mol or more based on the total amount of the fatty acid (a1), and a polyol (a2) that is pentaerythritol and/or dipentaerythritol.Type: GrantFiled: March 10, 2016Date of Patent: October 8, 2019Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Masato Kaneko, Tadashi Kisen, Takahiro Hoshida
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Patent number: 10053647Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising a refrigerating machine oil that comprises an ester of a polyhydric alcohol and a fatty acid, an epoxy compound, and a phosphorus compound, and a fluoropropene refrigerant, wherein the polyhydric alcohol constituting the ester comprises pentaerythritol and dipentaerythritol, the fatty acid constituting the ester comprises at least one selected from fatty acids having 4 to 9 carbon atoms, and the epoxy compound and the phosphorus compound satisfy a condition represented by the following formula (1). [ Formula ? ? 1 ] ? 0.10 ? ( N E M E · W E ) ( N P M P · W P ) ? 1.Type: GrantFiled: December 22, 2014Date of Patent: August 21, 2018Assignees: Denso Corporation, Kabushki Kaisha Toyota Jidoshokki, JX Nippon Oil & Energy CorporationInventors: Masataka Muto, Hajime Mukawa, Takekazu Kano, Genki Hayashi, Kazuki Yamamoto, Takahiro Hoshida, Hitoshi Takahashi, Ken Sawada, Akira Tada, Souichirou Konno
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Patent number: 9976106Abstract: Provided is a refrigerating machine oil composition, which is to be used for a refrigerant including a mixture of an unsaturated fluorinated hydrocarbon compound, a saturated fluorinated hydrocarbon compound and CO2, contains a base oil which includes at least one selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol or a monoether thereof and a polyvinyl ether, and a polyol ester and has a kinematic viscosity at 100° C. of 2 mm2/s or more and 50 mm2/s or less and a hydroxyl value of 5 mgKOH/g or less, is able to be used for a refrigerating machine system using a refrigerant having a low global warming potential and usable especially for a car air conditioner or the like and including a mixture of an unsaturated fluorinated hydrocarbon compound, a saturated fluorinated hydrocarbon compound and CO2, and exhibits not only excellent compatibility with the refrigerant but also excellent stability.Type: GrantFiled: March 14, 2014Date of Patent: May 22, 2018Assignees: IDEMITSU KOSAN CO., LTD., DENSO CORPORATION, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masato Kaneko, Masataka Muto, Masami Sanuki, Takahiro Hoshida
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Publication number: 20180079982Abstract: The mixed composition for a refrigerator of the present invention contains: a refrigerant containing at least one unsaturated fluorinated hydrocarbon compound selected from compounds represented by the following molecular formula (1): CpFrHs??(1) wherein p represents an integer of from 2 to 6; r represents an integer of from 1 to 11; and a represents an integer of from 1 to 11, provided that the compound has one or more carbon-carbon unsaturated bond in a molecule, and a refrigerator lubricating oil containing, as a major component, a polyol ester (A) of a fatty acid (a1) that is a fatty acid having a number of carbon atoms of from 9 to 16 and has a content of a fatty acid having a number of carbon atoms of 9 of 50% by mol or more based on the total amount of the fatty acid (a1), and a polyol (a2) that is pentaerythritol and/or dipentaerythritol.Type: ApplicationFiled: March 10, 2016Publication date: March 22, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Masato KANEKO, Tadashi KISEN, Takahiro HOSHIDA
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Publication number: 20180044608Abstract: The refrigerator lubricating oil of the present invention contains: a base oil containing, as a major component, a polyol ester (A) of a fatty acid (a1) that is a fatty acid having a number of carbon atoms of from 3 to 18 and a polyol (a2) that is selected from neopentyl glycol, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol, and dipentaerythritol; and a disulfide and/or trisulfide compound (B), and the disulfide and/or trisulfide compound (B) is blended in an amount of from 30 to 10,000 ppm by mass in terms of sulfur equivalent based on the total amount of the refrigerator lubricating oil.Type: ApplicationFiled: March 10, 2016Publication date: February 15, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Masato KANEKO, Takahiro HOSHIDA
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Publication number: 20170037337Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising a refrigerating machine oil that comprises an ester of a polyhydric alcohol and a fatty acid, an epoxy compound, and a phosphorus compound, and a fluoropropene refrigerant, wherein the polyhydric alcohol constituting the ester comprises pentaerythritol and dipentaerythritol, the fatty acid constituting the ester comprises at least one selected from fatty acids having 4 to 9 carbon atoms, and the epoxy compound and the phosphorus compound satisfy a condition represented by the following formula (1). [ Formula ? ? 1 ] ? 0.10 ? ( N E M E · W E ) ( N P M P · W P ) ? 1.Type: ApplicationFiled: December 22, 2014Publication date: February 9, 2017Applicants: Denso Corporation, Kabushki Kaisha Toyota Jidoshokki, JX Nippon Oil & Energy CorporationInventors: Masataka MUTO, Hajime MUKAWA, Takekazu KANO, Genki HAYASHI, Kazuki YAMAMOTO, Takahiro HOSHIDA, Hitoshi TAKAHASHI, Ken SAWADA, Akira TADA, Souichirou KONNO
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Publication number: 20160040094Abstract: Provided is a refrigerating machine oil composition, which is to be used for a refrigerant including a mixture of an unsaturated fluorinated hydrocarbon compound, a saturated fluorinated hydrocarbon compound and CO2, contains a base oil which includes at least one selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol or a monoether thereof and a polyvinyl ether, and a polyol ester and has a kinematic viscosity at 100° C. of 2 mm2/s or more and 50 mm2/s or less and a hydroxyl value of 5 mgKOH/g or less, is able to be used for a refrigerating machine system using a refrigerant having a low global warming potential and usable especially for a car air conditioner or the like and including a mixture of an unsaturated fluorinated hydrocarbon compound, a saturated fluorinated hydrocarbon compound and CO2, and exhibits not only excellent compatibility with the refrigerant but also excellent stability.Type: ApplicationFiled: March 14, 2014Publication date: February 11, 2016Applicants: IDEMITSU KOSAN CO., LTD., DENSO CORPORATION, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masato KANEKO, Masataka MUTO, Masami SANUKI, Takahiro HOSHIDA
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Patent number: 9062666Abstract: The swash plate type variable displacement compressor includes a rotary shaft, a swash plate, a plurality of pistons, a first rotor, a second rotor, a solenoid and a cone clutch. The second rotor transmits the rotation of the first rotor to the swash plate. The solenoid produces electromagnetic force that acts on the first rotor or the second rotor so that the first rotor and the second rotor move toward each other. The cone clutch is engageable by energization of the solenoid. The cone clutch has a male cone portion and a female cone portion. The male cone portion has a conical surface provided on one of the first rotor and the second rotor. The female cone portion has a conical surface provided on the other. The conical surface of the female cone portion is connectable to and disconnectable from the conical surface of the male cone portion.Type: GrantFiled: January 16, 2013Date of Patent: June 23, 2015Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masaki Ota, Shohei Fujiwara, Takahiro Hoshida, Hiroaki Kayukawa, Noriyuki Shintoku
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Patent number: 8906250Abstract: A lubricating oil composition for refrigerator including a base oil and an acid scavenger, and a compressor using the composition are provided, where the acid scavenger is a polyalkylene glycol derivative represented by a formula (1) as follows: R1—[(OR2)e—OR3]f??(1) and the base oil is at least one compound selected from a group consisting of polyvinyl ether, polyalkylene glycol and an ether-base compound represented by a formula (2) as follows, Ra-[(ORb)n-(X)—(ORc)k]x-Rd??(2) where meanings of respective signs are as described in the specification.Type: GrantFiled: November 20, 2008Date of Patent: December 9, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Masato Kaneko, Harutomo Ikeda, Tokue Sato, Takayuki Kato, Takahiro Hoshida, Masato Takamatsu, Masahiro Suzuki, Shuichi Yasuda, Masataka Muto, Shozo Ikejima, Masahito Yamashita
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Publication number: 20140341766Abstract: A compressor has therein a suction chamber into which refrigerant gas is introduced, a compression chamber in which the refrigerant gas in the suction chamber is introduced and compressed, and a discharge chamber into which the compressed refrigerant gas is discharged from the compression chamber. The suction chamber and the discharge chamber are formed adjacent to each other while being separated by a partition wall. At least one surface of the partition wall is provided with a thermal insulator which is formed by curing a thermal insulation coating composition. The thermal insulator includes hollow beads and one or more binder resin selected from the group consisting of epoxy resin, polyamide-imide resin, phenolic resin, and polyimide resin.Type: ApplicationFiled: May 13, 2014Publication date: November 20, 2014Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Takahiro HOSHIDA, Hiroaki KAYUKAWA, Noriyuki SHINTOKU, Masahiro SUZUKI, Osamu HIRAMATSU, Yasushi SUZUKI
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Patent number: 8703662Abstract: A lubricating oil composition for refrigerators comprising a base oil which comprises as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane, and neopentyl glycol and a C4 to C20 aliphatic monocarboxylic acid and which has an acid value of 0.02 mgKOH/g or less and a hydroxyl value of 5 mgKOH/g or less. A compressor using the lubricating composition. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability. The compressor uses the lubricating composition.Type: GrantFiled: April 18, 2008Date of Patent: April 22, 2014Assignees: Idemitsu Kosan Co., Ltd., Kabushiki Kaisha Toyota Jidoshokki, Denso CorporationInventors: Masato Kaneko, Harutomo Ikeda, Takayuki Kato, Takahiro Hoshida, Masaki Inoue, Shozo Ikejima, Masataka Muto, Masahito Yamashita
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Publication number: 20130251507Abstract: Disclosed is an EPDM composition for molding sealing materials, containing a plasticizer; the plasticizer being a paraffinic oil or naphthenic oil in which the absolute value of the difference between its SP value (solubility parameter; determined by Small's formula) and the SP value of EPDM is 0.3 (cal/cm3)1/2 or less; and the composition being free of an ether ester plasticizer. The EPDM composition for molding sealing materials has the following excellent effects. Because a paraffinic oil or naphthenic oil that is compatible with EPDM and has an absolute value of the difference between its SP value and the SP value of EPDM of 0.3 (cal/cm3)1/2 or less is used as the plasticizer, a peroxide crosslinked product of the EPDM composition does not form defects that cause the starting point of blisters even when it is subjected to extraction by being brought into contact with HFO-1234yf.Type: ApplicationFiled: November 29, 2011Publication date: September 26, 2013Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Takuya Yamanaka, Masahiro Suzuki, Takayuki Kato, Takahiro Hoshida, Masato Takamatsu, Shuichi Yasuda
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Patent number: 8460571Abstract: Provided is a lubricant composition for a refrigerator, which is characterized by using a substance mainly containing a polyoxyalkylene glycol derivative and having a hydroxyl number of 5 mgKOH/g or less, as a base oil. Also provided is a compressor using such the lubricant composition for a refrigerator. The lubricant composition for a refrigerator is used for a refrigerator which uses a refrigerant having a specific structure such as an unsaturated fluorohydrocarbon and being usable in current air-conditioning systems for cars or the like. The lubricant composition for a refrigerator exhibits excellent compatibility with the refrigerant, while having excellent stability. The compressor uses such the lubricant composition for a refrigerator.Type: GrantFiled: June 12, 2008Date of Patent: June 11, 2013Assignees: Idemitsu Kosan Co., Ltd., Kabushiki Kaisha Toyota Jidoshokki, Denso CorporationInventors: Masato Kaneko, Harutomo Ikeda, Takayuki Kato, Takahiro Hoshida, Masaki Inoue, Shozo Ikejima, Masataka Muto, Masahito Yamashita
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Publication number: 20120057999Abstract: The motor-driven compressor includes a housing, a compression mechanism, a rotary shaft and an electric motor all disposed in the housing, a protective film and a fixing resin. The electric motor is adapted to rotate the rotary shaft thereby to drive the compression mechanism. The electric motor has a rotor fixed on the rotary shaft and a stator supported by the housing. The rotor has a permanent magnet and a magnet hole in which the permanent magnet is inserted. The magnet hole extends in an axial direction of the rotor. The protective film is formed on a surface of the permanent magnet for improving corrosion resistance of the permanent magnet. The fixing resin is filled in at least part of a gap between the permanent magnet and a wall of the magnet hole for fixing the permanent magnet to the wall of the magnet hole.Type: ApplicationFiled: August 31, 2011Publication date: March 8, 2012Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Hiroshi Fukasaku, Minoru Mera, Kensuke Ikai, Takayuki Kato, Takahiro Sugioka, Takahiro Hoshida
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Publication number: 20100281912Abstract: A lubricating oil composition for refrigerator including a base oil and an acid scavenger, and a compressor using the composition are provided, where the acid scavenger is a polyalkylene glycol derivative represented by a formula (1) as follows: R1-[(OR2)e—OR3]f??(1) and the base oil is at least one compound selected from a group consisting of polyvinyl ether, polyalkylene glycol and an ether-base compound represented by a formula (2) as follows, Ra-[(ORb)n-(X)—(ORc)k]x-Rd??(2) where meanings of respective signs are as described in the specification.Type: ApplicationFiled: November 20, 2008Publication date: November 11, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Masato Kaneko, Harutomo Ikeda, Tokue Sato, Takayuki Kato, Takahiro Hoshida, Masato Takamatsu, Masahiro Suzuki, Shuichi Yasuda, Masataka Muto, Shozo Ikejima, Masahito Yamashita
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Publication number: 20100175421Abstract: Provided is a lubricant composition for a refrigerator, which is characterized by using a substance mainly containing a polyoxyalkylene glycol derivative and having a hydroxyl number of 5 mgKOH/g or less, as a base oil. Also provided is a compressor using such the lubricant composition for a refrigerator. The lubricant composition for a refrigerator is used for a refrigerator which uses a refrigerant having a specific structure such as an unsaturated fluorohydrocarbon and being usable in current air-conditioning systems for cars or the like. The lubricant composition for a refrigerator exhibits excellent compatibility with the refrigerant, while having excellent stability. The compressor uses such the lubricant composition for a refrigerator.Type: ApplicationFiled: June 12, 2008Publication date: July 15, 2010Applicants: IDEMITSU KOSAN CO., LTD., KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, DENSO CORPORATIONInventors: Masato Kaneko, Harutomo Ikeda, Takayuki Kato, Takahiro Hoshida, Masaki Inoue, Shozo Ikejima, Masataka Muto, Masahito Yamashita
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Publication number: 20100147016Abstract: A lubricating oil composition for refrigerators comprising a base oil which comprises as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane, and neopentyl glycol and a C4 to C20 aliphatic monocarboxylic acid and which has an acid value of 0.02 mgKOH/g or less and a hydroxyl value of 5 mgKOH/g or less. A compressor using the lubricating composition. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability. The compressor uses the lubricating composition.Type: ApplicationFiled: April 18, 2008Publication date: June 17, 2010Applicants: Idemitsu Kosan Co., Ltd, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, DENSO CORPORATIONInventors: Masato Kaneko, Harutomo Ikeda, Takayuki Kato, Takahiro Hoshida, Masaki Inoue, Shozo Ikejima, Masataka Muto, Masahito Yamashita
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Patent number: 7156014Abstract: A compressor has a swash plate and shoes. Surfaces of the swash plate slides on flat surfaces of the shoes. A sliding film is formed on each of the swash plate surfaces. The sliding films are formed of a polyamide-imide resin that contains at least solid lubricant. The polyamide-amide resin has a glass transition temperature of 270° C., a tensile strength at room temperature of 200 MPa, or more imide groups than amide groups. When a base portion of the swash plate is made of an aluminum-based metal, the sliding films are formed on the base portion with middle layers made of anodized aluminum in between.Type: GrantFiled: June 17, 2004Date of Patent: January 2, 2007Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Takahiro Sugioka, Manabu Sugiura, Takahiro Hoshida, Masami Osako, Toshihisa Shimo, Hitotoshi Murase, Takayuki Kato