Patents by Inventor Shozo Ikejima
Shozo Ikejima 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: 20210324294Abstract: The present invention provides a grease composition for electrical contacts, including: a thickener; a base oil; and an organic sulfur compound, wherein the organic sulfur compound is a compound having no heterocycle containing nitrogen in a molecule thereof.Type: ApplicationFiled: April 14, 2021Publication date: October 21, 2021Applicants: KYODO YUSHI CO., LTD., DENSO CORPORATIONInventors: Takahiro NIHIRA, Chiemi NAKAYAMA, Daisuke TSUTSUI, Shozo IKEJIMA, Ryuji AOKI, Takahiro NOZU
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Patent number: 10844309Abstract: Provided is a grease composition for a magnet clutch of an automobile, including: a base oil; and a thickener, wherein the composition contains 5% by mass or more of a sulfur content in terms of sulfur element relative to a total mass of the composition.Type: GrantFiled: July 5, 2018Date of Patent: November 24, 2020Assignees: KYODO YUSHI CO., LTD., DENSO CORPORATIONInventors: Shozo Ikejima, Iwaki Hirooka, Yutaka Imai, Ryosuke Ichimura, Kazuki Isa, Yusuke Asada, Kyoji Inukai, Hiromasa Tanaka, Masashi Tobayama, Toshizo Watanabe
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Publication number: 20190062664Abstract: Provided is a grease composition for a magnet clutch of an automobile, including: a base oil; and a thickener, wherein the composition contains 5% by mass or more of a sulfur content in terms of sulfur element relative to a total mass of the composition.Type: ApplicationFiled: July 5, 2018Publication date: February 28, 2019Applicants: Kyodo Yushi Co., Ltd., Denso CorporationInventors: Shozo Ikejima, Iwaki Hirooka, Yutaka Imai, Ryosuke Ichimura, Kazuki Isa, Yusuke Asada, Kyoji Inukai, Hiromasa Tanaka, Masashi Tobayama, Toshizo Watanabe
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Publication number: 20180340128Abstract: There is provided a press-fit lubricant composition comprising an unsaturated compound with an iodine value of 100 or more.Type: ApplicationFiled: April 27, 2018Publication date: November 29, 2018Applicants: KYODO YUSHI CO., LTD., DENSO CORPORATIONInventors: Takahiro NIHIRA, Hiroyuki ISHIKAWA, Masanori KOMABA, Shozo IKEJIMA, Yusuke ASADA, Takahiro NOZU, Takumi SHIOMI, Kyoji INUKAI
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Patent number: 9663698Abstract: The invention provides a cold and heat storage agent composition containing paraffin as a base material and at least one selected from the group consisting of organic inhibitors and passivators as a hydrogen generation inhibitor.Type: GrantFiled: February 15, 2013Date of Patent: May 30, 2017Assignees: KYODO YUSHI CO., LTD., DENSO CORPORATIONInventors: Terasu Yoshinari, Minoru Namiki, Koji Sakakibara, Atsushi Yamada, Shozo Ikejima
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Patent number: 9422500Abstract: The invention provides a grease composition capable of smoothly operating the lubricated parts even under wide-ranging temperature conditions, and at the same time, exhibiting excellent noise reducing effect on the lubricated parts. The grease composition containing a base oil and a thickener is provided, wherein the base oil includes at least one first base oil selected from the group consisting of poly-?-olefins and ethylene-?-olefin oligomers and at least one second base oil selected from the group consisting of polybutene, polyisobutylene, polymethacrylate, and styrene based copolymers, with the first base oil being contained in an amount of 65 mass % or more and the second base oil being contained in an amount of 1 mass % or more and less than 35 mass % based on the total mass of the base oil, the base oil having a kinematic viscosity of 350 to 1400 mm2/s at 40° C., the first base oil having a kinematic viscosity of 300 to 1200 mm2/s at 40° C.Type: GrantFiled: February 15, 2010Date of Patent: August 23, 2016Assignees: KYODO YUSHI CO., LTD., DENSO CORPORATIONInventors: Kyosuke Ikuma, Mitsuhiro Kakizaki, Koji Sakakibara, Shozo Ikejima, Suehiro Okazaki, Koji Hisaka
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Patent number: 9328308Abstract: The invention provides a grease composition containing a thickener and a base oil, wherein the base oil contains (a) a hydrocarbon oil extracted from Botryococcus braunii and/or (b) a hydrocarbon oil obtainable by hydrogenating the hydrocarbon oil (a).Type: GrantFiled: February 21, 2013Date of Patent: May 3, 2016Assignees: KYODO YUSHI CO., LTD., DENSO CORPORATION, UNIVERSITY OF TSUKUBAInventors: Makoto Hayama, Hitoshi Kuno, Masao Nagakubo, Shozo Ikejima, Makoto Watanabe
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Publication number: 20160024364Abstract: The invention provides a cold and heat storage agent composition containing paraffin as a base material and at least one selected from the group consisting of organic inhibitors and passivators as a hydrogen generation inhibitor.Type: ApplicationFiled: February 15, 2013Publication date: January 28, 2016Inventors: Terasu YOSHINARI, Minoru NAMIKI, Koji SAKAKIBARA, Atsushi YAMADA, Shozo IKEJIMA
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Publication number: 20150024982Abstract: The invention provides a grease composition containing a thickener and a base oil, wherein the base oil contains (a) a hydrocarbon oil extracted from Botryococcus braunii and/or (b) a hydrocarbon oil obtainable by hydrogenating the hydrocarbon oil (a).Type: ApplicationFiled: February 21, 2013Publication date: January 22, 2015Inventors: Makoto Hayama, Hitoshi Kuno, Masao Nagakubo, Shozo Ikejima, Makoto Watanabe
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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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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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Patent number: 8633282Abstract: A metal removing agent has a capability of removing metal clusters and metal ions from fuel with high efficiency. The metal removing agent is made of resin having anionic functional group of a functional group density within a range of 2 to 25 mmol/ml. The anionic functional group contained in the metal removing agent is at least one selected from sulfonate group, carboxyl group, sulfate group, thiol group, phosphate group, phosphonate group, iminodiacetic acid group, and aminophosphate group. A metal removing filter has a container and the metal removing agent. The container accommodates the metal removing agent.Type: GrantFiled: December 10, 2010Date of Patent: January 21, 2014Assignee: Denso CorporationInventors: Asaki Iwata, Hiroki Kuriyama, Shozo Ikejima, Minoru Funahashi
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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: 20110294705Abstract: The invention provides a grease composition capable of smoothly operating the lubricated parts even under wide-ranging temperature conditions, and at the same time, exhibiting excellent noise reducing effect on, the lubricated parts. The grease composition containing a base oil and a thickener is provided, wherein the base oil includes at least one first base oil selected from the group consisting of poly-?-olefins and ethylene-?-olefin oligomers and at least one second base oil selected from the group consisting of polybutene, polyisobutylene, polymethacrylate, and styrene based copolymers, with the first base oil being contained in an amount of 65 mass % or more and the second base oil being contained in an amount of 1 mass % or more and less than 35 mass % based on the total mass of the base oil, the base oil having a kinematic viscosity of 350 to 1400 mm2/s at 40° C., the first base oil having a kinematic viscosity of 300 to 1200 rnm2/s at 40° C.Type: ApplicationFiled: February 15, 2010Publication date: December 1, 2011Applicants: DENSO CORPORATION, KYODO YUSHI CO., LTD.Inventors: Kyosuke Ikuma, Mitsuhiro Kakizaki, Koji Sakakibara, Shozo Ikejima, Suehiro Okazaki, Koji Hisaka
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Publication number: 20110139702Abstract: A metal removing agent has a capability of removing metal clusters and metal ions from fuel with high efficiency. The metal removing agent is made of resin having anionic functional group of a functional group density within a range of 2 to 25 mmol/ml. The anionic functional group contained in the metal removing agent is at least one selected from sulfonate group, carboxyl group, sulfate group, thiol group, phosphate group, phosphonate group, iminodiacetic acid group, and aminophosphate group. A metal removing filter has a container and the metal removing agent. The container accommodates the metal removing agent.Type: ApplicationFiled: December 10, 2010Publication date: June 16, 2011Applicant: DENSO CORPORATIONInventors: Asaki IWATA, Hiroki Kuriyama, Shozo Ikejima, Minoru Funahashi
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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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Publication number: 20060205613Abstract: The present invention relates to a grease composition for use in harnesses, which comprises a thickening agent, a base oil and additives, wherein the base oil comprises a polyoxyalkylene glycol ether and the additives comprise a quinoline compound and a benzotriazole compound. The grease composition is quite excellent in the corrosion resistance, the oxidation stability and the compatibility with materials such as olefinic elastomer.Type: ApplicationFiled: March 7, 2006Publication date: September 14, 2006Applicants: Kyodo Yushi Co., Ltd., Denso CorporationInventors: Kyosuke Ikuma, Ko Yaegashi, Hiroshi Kimura, Keiji Sasaki, Shozo Ikejima, Masahiko Sugaya, Masahiko Morikawa
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Publication number: 20060001002Abstract: A refrigerating cycle comprising a compressor 1 which compresses and discharges a refrigerant containing a refrigerating machine oil in a refrigerant circulating passage for lubricating the compressor 1, wherein fine particles 17 having a nearly circular shape in cross section are put into the refrigerant circulating passage. The fine particles 17 present between the sliding surfaces of the compressor prevent direct contact between the sliding surfaces. Besides, the fine particles 17 having a nearly circular shape in cross section roll when the opposing side surfaces move relative to each other creating rolling friction. Therefore, the coefficient of friction decreases on the sliding portions of the compressor 1.Type: ApplicationFiled: June 30, 2005Publication date: January 5, 2006Inventors: Shigeki Iwanami, Shigeru Kawano, Teruhiko Kameoka, Shozo Ikejima, Takashi Honda