Patents by Inventor Izumi Terada
Izumi Terada 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: 20180291247Abstract: The refrigerator oil of the present invention is a refrigerator oil for a refrigerant including difluoromethane (R32), which contains a polyvinyl ether-based compound (A) including a constitutional unit (a1) having a methoxyethyl group in a side chain thereof.Type: ApplicationFiled: May 23, 2016Publication date: October 11, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Tadashi KISEN, Izumi TERADA, Mitsuru SHIBATA, Tomoya MATSUMOTO, So NAKAJIMA
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Patent number: 9388361Abstract: A lubricating oil additive composition contains a borated succinimide derivative and an amino alcohol compound. A lubricating oil composition containing the lubricating oil additive composition is excellent in high-temperature detergency and base value retention (long-drain capabilities) even though a blended content of a metal detergent is low and an ash content is small.Type: GrantFiled: March 13, 2013Date of Patent: July 12, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Izumi Terada, Junya Iwasaki
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Patent number: 9074158Abstract: Provided is a detergent-dispersant for a lubricant having excellent detergency and dispersibility effects. Specifically provided are: a detergent-dispersant including a heterocyclic compound having a heterocyclic skeleton derived from a compound selected from the group consisting of pyridines, pyrroles, pyrimidines, pyrazoles, pyridazines, imidazoles, pyrazines, triazines, triazoles, tetrazoles, oxazoles, oxadiazoles, thiazoles, thiadiazoles, furans, dioxanes, pyrans, and thiophenes; and an additive composition for a lubricant and a lubricant composition, each containing the detergent-dispersant.Type: GrantFiled: June 13, 2014Date of Patent: July 7, 2015Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Junya Iwasaki, Izumi Terada, Hiroaki Koshima
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Publication number: 20150080278Abstract: A lubricating oil additive composition contains a borated succinimide derivative and an amino alcohol compound. A lubricating oil composition containing the lubricating oil additive composition is excellent in high-temperature detergency and base value retention (long-drain capabilities) even though a blended content of a metal detergent is low and an ash content is small.Type: ApplicationFiled: March 13, 2013Publication date: March 19, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Izumi Terada, Junya Iwasaki
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Patent number: 8853139Abstract: Provided is a detergent-dispersant for a lubricant having excellent detergency and dispersibility effects. Specifically provided are: a detergent-dispersant including a heterocyclic compound having a heterocyclic skeleton derived from a compound selected from the group consisting of pyridines, pyrroles, pyrimidines, pyrazoles, pyridazines, imidazoles, pyrazines, triazines, triazoles, tetrazoles, oxazoles, oxadiazoles, thiazoles, thiadiazoles, furans, dioxanes, pyrans, and thiophenes; and an additive composition for a lubricant and a lubricant composition, each containing the detergent-dispersant.Type: GrantFiled: October 19, 2012Date of Patent: October 7, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Junya Iwasaki, Izumi Terada, Hiroaki Koshima
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Publication number: 20140296115Abstract: Provided is a detergent-dispersant for a lubricant having excellent detergency and dispersibility effects. Specifically provided are: a detergent-dispersant including a heterocyclic compound having a heterocyclic skeleton derived from a compound selected from the group consisting of pyridines, pyrroles, pyrimidines, pyrazoles, pyridazines, imidazoles, pyrazines, triazines, triazoles, tetrazoles, oxazoles, oxadiazoles, thiazoles, thiadiazoles, furans, dioxanes, pyrans, and thiophenes; and an additive composition for a lubricant and a lubricant composition, each containing the detergent-dispersant.Type: ApplicationFiled: June 13, 2014Publication date: October 2, 2014Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Junya IWASAKI, Izumi TERADA, Hiroaki KOSHIMA
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Patent number: 8486871Abstract: A lubricating oil for a compression-type refrigerator using a hydrofluorocarbon refrigerant including a polyvinyl ether-based compound containing in the molecule an alkylene glycol unit or a polyoxyalkylene glycol unit and a polyvinyl ether unit and having a molecular weight in the range of 300 to 3,000, and a refrigeration apparatus using the lubricating oil. The present invention can provide a lubricating oil for a compression-type refrigerator having good compatibility in the atmosphere of a hydrofluorocarbon and a high viscosity index, and a refrigeration apparatus using such a lubricating oil.Type: GrantFiled: March 4, 2008Date of Patent: July 16, 2013Assignee: Idemitsu Kosan Co., Ltd.Inventors: Satoshi Nagao, Izumi Terada, Nobuaki Shimizu, Masato Kaneko
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Publication number: 20130045904Abstract: Provided is a detergent-dispersant for a lubricant having excellent detergency and dispersibility effects. Specifically provided are: a detergent-dispersant including a heterocyclic compound having a heterocyclic skeleton derived from a compound selected from the group consisting of pyridines, pyrroles, pyrimidines, pyrazoles, pyridazines, imidazoles, pyrazines, triazines, triazoles, tetrazoles, oxazoles, oxadiazoles, thiazoles, thiadiazoles, furans, dioxanes, pyrans, and thiophenes; and an additive composition for a lubricant and a lubricant composition, each containing the detergent-dispersant.Type: ApplicationFiled: October 19, 2012Publication date: February 21, 2013Inventors: Junya Iwasaki, Izumi Terada, Hiroaki Koshima
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Publication number: 20120232287Abstract: A detergent dispersant contains a nitrogen-containing compound represented by the following formula (1). A lubricating oil composition contains the detergent dispersant. Each symbol in the formula means the same as described in the description.Type: ApplicationFiled: September 29, 2010Publication date: September 13, 2012Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Junya Iwasaki, Izumi Terada
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Patent number: 7927503Abstract: The present invention provides lubricating oil for a compression refrigerator, characterized by including an alkylene glycol or polyoxy alkylene glycol unit and a vinyl ether unit in a molecule and containing a polyvinyl ether compound having a molecular weight of 300 to 3,000. The lubricating oil for a compression refrigerator has a high viscosity index and excellent compatibility under a natural refrigerant atmosphere such as carbon dioxide.Type: GrantFiled: October 26, 2007Date of Patent: April 19, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Satoshi Nagao, Izumi Terada, Nobuaki Shimizu, Masato Kaneko
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Publication number: 20100184982Abstract: Provided is a detergent-dispersant for a lubricant having excellent detergency and dispersibility effects. Specifically provided are: a detergent-dispersant including a heterocyclic compound having a heterocyclic skeleton derived from a compound selected from the group consisting of pyridines, pyrroles, pyrimidines, pyrazoles, pyridazines, imidazoles, pyrazines, triazines, triazoles, tetrazoles, oxazoles, oxadiazoles, thiazoles, thiadiazoles, furans, dioxanes, pyrans, and thiophenes; and an additive composition for a lubricant and a lubricant composition, each containing the detergent-dispersant.Type: ApplicationFiled: June 10, 2008Publication date: July 22, 2010Applicant: IDEMITSU KOSAN CO., LTDInventors: Junya Iwasaki, Izumi Terada, Hiroaki Koshima
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Publication number: 20100139311Abstract: A lubricating oil for a compression-type refrigerator using a hydrofluorocarbon refrigerant including a polyvinyl ether-based compound containing in the molecule an alkylene glycol unit or a polyoxyalkylene glycol unit and a polyvinyl ether unit and having a molecular weight in the range of 300 to 3,000, and a refrigeration apparatus using the lubricating oil. The present invention can provide a lubricating oil for a compression-type refrigerator having good compatibility in the atmosphere of a hydrofluorocarbon and a high viscosity index, and a refrigeration apparatus using such a lubricating oil.Type: ApplicationFiled: March 4, 2008Publication date: June 10, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Satoshi Nagao, Izumi Terada, Nobuaki Shimizu, Masato Kaneko
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Publication number: 20090000331Abstract: The present invention provides lubricating oil for a compression refrigerator, characterized by including an alkylene glycol or polyoxy alkylene glycol unit and a vinyl ether unit in a molecule and containing a polyvinyl ether compound having a molecular weight of 300 to 3,000. The lubricating oil for a compression refrigerator has a high viscosity index and excellent compatibility under a natural refrigerant atmosphere such as carbon dioxide.Type: ApplicationFiled: October 26, 2007Publication date: January 1, 2009Applicant: Idemitsu Kosan Co., Ltd.Inventors: Satoshi Nagao, Izumi Terada, Nobuaki Shimizu, Masato Kaneko
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Publication number: 20080108850Abstract: The present invention provides a polyvinyl ether compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in the range of 300 to 3,000. It shows high volume resistivity and a high viscosity index, so it can be favorably used as lubricating oil for a compression refrigerator.Type: ApplicationFiled: October 31, 2007Publication date: May 8, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Satoshi NAGAO, Izumi Terada, Nobuaki Shimizu, Masato Kaneko
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Publication number: 20070042918Abstract: The present invention is directed to a lubricating oil additive containing a reaction product of a succinimide compound and a phosphorus atom-containing compound, and to a lubricating oil composition containing a mineral oil and/or a synthetic base oil, and the above lubricating oil additive.Type: ApplicationFiled: October 4, 2004Publication date: February 22, 2007Applicant: Idemitsu Kosan Co., Ltd.Inventors: Shinichi Yanagi, Hiroaki Koshima, Izumi Terada, Toshihiko Ichihashi, Nobuaki Watanabe
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Publication number: 20050181957Abstract: The invention provides a lubricating oil additive for internal combustion engines which additive enables to prepare a lubricating oil composition for internal combustion engines having an enhanced base number without impairing the performance of an exhaust gas treatment apparatus such as a PM trap or an oxidation catalyst member; a lubricating oil additive composition for internal combustion engines; and a lubricating oil composition for internal combustion engines containing the lubricating oil additive composition.Type: ApplicationFiled: May 30, 2003Publication date: August 18, 2005Inventors: Hiroaki Koshima, Izumi Terada, Tadashi Katafuchi, Hideki Kamano
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Patent number: 6906191Abstract: Provided are a borosuccinimide compound obtained through reaction of (a) a succinic acid/anhydride substituted with an alkyl or alkenyl group having a number-average molecular weight of from 200 to 5,000, (b) a polyalkylene-polyamine of which at least 5 mol % has a terminal cyclic structure, and (c) a boron compound; and a succinimide compound obtained through reaction of (A) a succinic acid/anhydride substituted with an alkyl or alkenyl group having a molecular weight of from 200 to 5,000, with (D) a hydrocarbon-substituted polyalkylene-polyamine. These compounds are stable even at high temperatures and have good high-temperature detergency, and they are useful for ashless detergent dispersants having the ability to disperse fine particles. Also provided are a mixture of any of these compounds and a specific ester derivative; a lubricant additive and a fuel oil additive comprising the mixture as the essential ingredient; and a lubricant and a fuel oil composition containing the additive.Type: GrantFiled: December 26, 2000Date of Patent: June 14, 2005Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hiroaki Koshima, Izumi Terada
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Publication number: 20020010102Abstract: New sulfur-containing organophosphorus compounds of general formulae (I) and (II) and processes for producing the same; additives for lubricating oils, which contain the sulfur-containing organophosphorus compounds; and lubricating oil compositions satisfying requirements of extreme-pressure lubrication and abrasion resistance under severe conditions of high loads imposed, on automatic or continuously variable transmissions or the like. In said formulae, R1 is a hydrocarbon group having 6 to 20 carbon atoms; R2 is a divalent hydrocarbon group having 1 to 6 carbon atoms; n is an integer of 1 to 3; p is an integer of 0 to 2; and q is an integer of 0 or 1, with the proviso that p and q cannot be 0 at the same time.Type: ApplicationFiled: April 4, 2000Publication date: January 24, 2002Inventors: HIROAKI KOSHIMA, HITOSHI HATA, NOBORU SONODA, IZUMI TERADA
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Patent number: 5908818Abstract: There is disclosed a lubricating oil for compression-type refrigerators comprising a polyvinyl ether compound which contains a constituting unit represented by the general formula (I), a polyvinyl ether compound which contains constituting units represented by each one of the general formulae (I) and (II), or a mixture of these polyvinyl ether compounds, as the main component thereof. Ratio by mol of carbon to oxygen in the above polyvinyl ether compounds is 4.2 to 7.0. Also disclosed is a lubricating oil for compression-type refrigerators comprising a polyvinyl ether compound containing constituting units which are both represented by the general formula (I) but between which R.sup.5 is different.Type: GrantFiled: May 17, 1996Date of Patent: June 1, 1999Assignee: Idemitsu Kosan Co., Ltd.Inventors: Tatsuya Egawa, Yasuhiro Kawaguchi, Izumi Terada, Nobuaki Shimizu
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Patent number: 5420352Abstract: 1-Methyl-2-phenoxy ethanol of the formula, ##STR1## [wherein R is hydrogen or an alkyl group having 1 to 6 carbon atoms, and n is an integer of 0 or 1 to 5]is allowed to react with ammonia in a solvent in the presence of a copper-chromium catalyst and hydrogen, whereby 1-phenoxy-2-aminopropane of the formula ##STR2## [wherein R and n are as defined above] can be obtained at high yields at high selectivity.Type: GrantFiled: May 31, 1994Date of Patent: May 30, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hidetoshi Koga, Izumi Terada