Patents by Inventor Shozaburo Konishi
Shozaburo Konishi 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: 7951756Abstract: The present invention relates to a system wherein a pair of relatively movable, facing DLC contact surfaces at least one of which is coated with a DLC film, are further lowered in friction, and the low friction property is stably maintained. The present invention also relates to a lubricant for the system, and a lubricating method. The lubricant for the system having the DLC contact surfaces contains lubricant base oil (A) mainly composed of base oil (X), and sulfur-containing molybdenum complex (B). The base oil (X) is at least one of hydrocracked mineral oils, wax-isomerized mineral oils, and poly-?-olefin base oils, and has a kinematic viscosity of 2 to 20 mm2/s at 100° C., a total aromatic content of not higher than 5 mass %, and a total sulfur content of not higher than 0.005 mass %.Type: GrantFiled: August 6, 2004Date of Patent: May 31, 2011Assignees: Nippon Oil Corporation, Nissan Motor Co., Ltd.Inventors: Shozaburo Konishi, Makoto Kano, Takafumi Ueno, Takao Ishikawa
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Publication number: 20110028361Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: ApplicationFiled: July 13, 2010Publication date: February 3, 2011Inventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
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Publication number: 20110021394Abstract: A lubricating oil composition comprising a lubricating base oil, and a mixture and/or a reaction product of (A) 0.01-0.5% by mass of at least one compound selected from among acid phosphates represented by formula (1) or formula (2), and (B) 0.01-2% by mass of an alkylamine represented by formula (3), based on the total weight of the composition, wherein the acid value due to component (A) is 0.1-1.0 mgKOH/g. [R1 and R2 represent hydrogen or straight-chain alkyl or straight-chain alkenyl groups, with at least one of R1 and R2 being a C6-12 straight-chain alkyl or straight-chain alkenyl group; R3 and R4 represent hydrogen straight-chain alkyl or straight-chain alkenyl groups, with at least one of R3 and R4 being a C13-18 straight-chain alkyl or straight-chain alkenyl group; and R5 and R6 represent hydrogen or C4-30 branched-chain alkyl groups, with at least one of R5 and R6 being a branched-chain alkyl group.Type: ApplicationFiled: March 12, 2009Publication date: January 27, 2011Applicant: JX NIPPON OIL & ENERGY CORPORATIONInventors: Hajime Nakao, Shozaburo Konishi, Toshio Yoshida
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Publication number: 20100093568Abstract: The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % CA of not more than 2, % CP/% CN of not less than 6 and an iodine value of not more than 2.5.Type: ApplicationFiled: July 3, 2007Publication date: April 15, 2010Inventors: Kazuo Tagawa, Yuji Shimomura, Ken Sawada, Katsuya Takigawa, Toshio Yoshida, Shinichi Mitsimoto, Eiji Akiyama, Junichi Shibata, Satoshi Suda, Hideo Yokota, Masahiro Hata, Hiroyuki Hoshino, Hajime Nakao, Shozaburo Konishi
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Publication number: 20100035777Abstract: The lubricating base oil of the invention is characterized by satisfying at least one of the following conditions (a) or (b). (a) A saturated compound content of 95% by mass or greater, and a proportion of 0.1-10% by mass of cyclic saturated compounds among the saturated compounds. (b) The condition represented by the following formula (1). 1.435?n20?0.002×kv100 ?1.450??(1) wherein n20 represents the refractive index of the lubricating base oil at 20° C., and kv100 represents the kinematic viscosity (mm2/s) of the lubricating base oil at 100° C.Type: ApplicationFiled: January 10, 2006Publication date: February 11, 2010Inventors: Takashi Sano, Hitoshi Komatsubara, Hisayuki Wada, Osamu Kurosawa, Masaaki Itou, Shigeki Matsui, Masato Takahashi, Kai Fu, Shinichi Shirahama, Izuru Sugiura, Masahiro Taguchi, Shozaburo Konishi
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Publication number: 20100016195Abstract: The lubricating base oil of the invention satisfies at least one of conditions (a) or (b) below. The lubricating oil composition for an internal combustion engine according to the invention comprises the lubricating base oil of the invention, an ashless antioxidant containing essentially no sulfur as a constituent element, and at least one compound selected from among ashless antioxidants containing sulfur as a constituent element and organic molybdenum compounds. Also, a lubricating oil composition for a power train device according to the invention comprises the lubricating base oil of the invention, a poly(meth)acrylate-based viscosity index improver and a phosphorus-containing compound. (a) The saturated component content is 90% by mass or greater, and the proportion of cyclic saturated components among the saturated components is 10-40% by mass. (b) The condition represented by the following formula (1) is satisfied. 1.440?n20?0.002×kv100?1.453 (1) [wherein n20 represents the 20° C.Type: ApplicationFiled: March 14, 2007Publication date: January 21, 2010Inventors: Shinichi Shirahama, Masahiro Taguchi, Kazuo Tagawa, Takashi Sano, Shozaburo Konishi, Shigeki Matsui, Osamu Kurosawa
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Publication number: 20080167206Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: ApplicationFiled: December 13, 2007Publication date: July 10, 2008Inventors: Shozaburo KONISHI, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
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Publication number: 20080146468Abstract: The present invention relates to a lubricant for lubricating relatively movable, facing contact surfaces at least one of which is coated with DLC, a method of lubricating DLC contact surfaces with this lubricant, and a system having DLC contact surfaces. The lubricant fulfills the following conditions (a) and (b): (a) the lubricant contains a lubricant base oil containing, as a main component, a base oil composed at least one of a hydrocracked mineral oil, a wax-isomerized mineral oil, and a poly-?-olefin base oil. The base oil has a kinematic viscosity of 2 to 20 mm2/s at 100° C., a total aromatic content of not higher than 5 mass %, and a sulfur content of 0.005 mass %; and (b) the lubricant has a sulfur content of not higher than 0.2 mass %.Type: ApplicationFiled: August 6, 2004Publication date: June 19, 2008Applicants: Nippon Oil Corporation, Nissan Motor Co., LTDInventors: Shozaburo Konishi, Makoto Kano, Takafumi Ueno, Takao Ishikawa
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Patent number: 7322749Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: GrantFiled: May 6, 2005Date of Patent: January 29, 2008Assignees: Nissan Motor Co., Ltd., Nippon Oil CorporationInventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
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Publication number: 20070060483Abstract: The present invention relates to a system wherein a pair of relatively movable, facing DLC contact surfaces at least one of which is coated with a DLC film, are further lowered in friction, and the low friction property is stably maintained. The present invention also relates to a lubricant for the system, and a lubricating method. The lubricant for the system having the DLC contact surfaces contains lubricant base oil (A) mainly composed of base oil (X), and sulfur-containing molybdenum complex (B). The base oil (X) is at least one of hydrocracked mineral oils, wax-isomerized mineral oils, and poly-?-olefin base oils, and has a kinematic viscosity of 2 to 20 mm2/s at 100° C., a total aromatic content of not higher than 5 mass %, and a total sulfur content of not higher than 0.005 mass %.Type: ApplicationFiled: August 6, 2004Publication date: March 15, 2007Applicants: NIPPON OIL CORPORATION, NISSAN MOTOR CO., LTD.Inventors: Shozaburo Konishi, Makoto Kano, Takafumi Ueno, Takao Ishikawa
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Publication number: 20060263604Abstract: The invention provides a low-friction sliding mechanism, a low-friction agent composition, a friction reduction method, a manual transmission and a final reduction gear unit that can exert very excellent low friction characteristics to sliding surfaces present under various applications, and, in particular, that have more excellent low friction characteristics than that of a combination of an existing steel material and an organic Mo compound. The low-friction sliding mechanism has an oxygen-containing organic compound or an aliphatic amine compound interposed between sliding surfaces that a DLC coated sliding member and a sliding member form. The low-friction agent composition contains an oxygen-containing organic compound or an aliphatic amine compound. The friction reduction method includes supplying the low-friction agent composition between sliding surfaces that a DLC coated sliding member and a sliding member form.Type: ApplicationFiled: August 6, 2004Publication date: November 23, 2006Inventors: Jean Martin, Shigeki Takeshima, Shozaburo Konishi, Makoto Kano, Yutaka Mabuchi, Takao Ishikawa, Takafumi Ueno, Kiyotaka Nakamura, Takahiro Hamada
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Patent number: 6969198Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: GrantFiled: October 27, 2003Date of Patent: November 29, 2005Assignees: Nissan Motor Co., Ltd., Nippon Oil CorporationInventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
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Publication number: 20050213854Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: ApplicationFiled: May 6, 2005Publication date: September 29, 2005Inventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
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Patent number: 6806242Abstract: A low-friction sliding mechanism of the present invention comprises first and second sliding members slidable relative to each other at sliding surfaces thereof and a lubricant being applied to the sliding surfaces of the first and second sliding members. The first and second members are made of a diamond-like carbon material and an iron-based material, respectively, and the lubricant comprises a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: GrantFiled: January 31, 2003Date of Patent: October 19, 2004Assignees: Nissan Motor Co., Ltd., Nippon Oil CorporationInventors: Shinichi Shirahama, Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Tokio Sakane
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Publication number: 20040092405Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: ApplicationFiled: October 27, 2003Publication date: May 13, 2004Applicants: NISSAN MOTOR CO., LTD., NIPPON OIL CORPORATIONInventors: Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Yutaka Mabuchi, Takahiro Hamada, Shigeki Takeshima, Kenji Tsushima
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Publication number: 20030162672Abstract: A low-friction sliding mechanism of the present invention comprises first and second sliding members slidable relative to each other at sliding surfaces thereof and a lubricant being applied to the sliding surfaces of the first and second sliding members. The first and second members are made of a diamond-like carbon material and an iron-based material, respectively, and the lubricant comprises a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.Type: ApplicationFiled: January 31, 2003Publication date: August 28, 2003Applicant: NISSAN MOTOR CO., LTD.Inventors: Shinichi Shirahama, Shozaburo Konishi, Makoto Kano, Yoshiteru Yasuda, Tokio Sakane
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Patent number: 5728655Abstract: A refrigerating machine oil composition for vapor compression type refrigerating machines is disclosed which can be used with either of HCFC refrigerants and HFC refrigerants. The inventive machine oil composition comprises a polyol ester (ester compound) as a base oil. Furthermore, the base oil contains from 1.0 to less than 5.0% by weight of a phosphate, from 0.1 to 2.0% by weight of an alkyl phosphorothionate and/or an aryl phosphorothionate, and from 0.05 to 2.0% by weight of an epoxy compound. The composition is free from sludge formation and insufficient lubricity, which are drawbacks of the polyol ester, due to the synergistic effect of these additives. On the other hand, the inventive composition provides the desirable properties of a polyol ester base oil, namely, good compatibility with refrigerants, high electrical insulating properties, and low hygroscopicity.Type: GrantFiled: January 19, 1996Date of Patent: March 17, 1998Assignees: Mitsubishi Oil Company, Limited, Mitsubishi Jukogyo Kabushiki KaishaInventors: Masayoshi Muraki, Yukiharu Beppu, Shozaburo Konishi, Takayoshi Hamada, Nobuo Murata, Norimasa Nishiura
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Patent number: 5653909Abstract: A refrigerating machine oil composition suitable for a compressor using a hydrofluorocarbon as a refrigerant, which comprises 100 parts by weight of a polyol ester as a base oil, from 7.0 to 15.0 parts by weight of a phosphate, and from 0.2 to 3.0 parts by weight in total of a 1,2-epoxyalkane and/or a vinylcyclohexene dioxide. The use of the refrigerating machine oil composition improves wear resistance of sliding portions of compressors and is free from the formation of sludges derived from the polyol ester used as a base oil of the oil composition. A rotary compressor using the oil composition is also disclosed.Type: GrantFiled: June 6, 1995Date of Patent: August 5, 1997Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Oil Company, LimitedInventors: Masayoshi Muraki, Yukiharu Beppu, Shozaburo Konishi, Susumu Kawaguchi, Noboru Masuda, Sou Suzuki