Patents by Inventor Yoji Sunagawa
Yoji Sunagawa 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: 11306270Abstract: To provide a lubricating oil composition achieving both of high traction coefficient and excellent low temperature fluidity at a higher level and having a high flash point, which contains a naphthene-based synthetic oil (a) having a flash point of 140° C. or higher, and an ester (b) having 5 to 32 carbon atoms and having a branched chain, wherein the content of the naphthene-based synthetic oil (a) based on the total amount of the composition is 35% by mass or more and less than 80% by mass, a method for producing the lubricating oil composition, and a continuously variable transmission using the lubricating oil composition.Type: GrantFiled: January 28, 2019Date of Patent: April 19, 2022Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yoji Sunagawa, Takeshi Iwasaki
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Patent number: 11208606Abstract: To provide a lubricating oil composition achieving both of high traction coefficient and excellent low temperature fluidity at a higher level and having a high flash point, which contains a naphthene-based synthetic oil (A) having a flash point of 140° C. or higher, a longifolene (B), and a predetermined monoester-based synthetic oil (C), a method for producing the lubricating oil composition, and a continuously variable transmission using the lubricating oil composition.Type: GrantFiled: February 28, 2019Date of Patent: December 28, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yoji Sunagawa, Takeshi Iwasaki
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Patent number: 11124732Abstract: Disclosed is a lubricating oil composition containing a base oil, a viscosity index improver, a molybdenum-based friction modifier, a boron-containing dispersant, and at least two extreme-pressure additives selected from a sulfur-based extreme-pressure additive, a phosphorous-based extreme-pressure additive and a sulfur/phosphorus-based extreme-pressure additive, or a sulfur/phosphorus-based extreme-pressure additive. The base oil is a synthetic oil having a kinematic viscosity at 100° C. of 3 mm2/s or more and 10 mm2/s or less, the viscosity index improver is a resin having a number average molecular weight (Mn) of 1,000 or more and 10,000 or less, the mass ratio of boron atoms (B) contained in the boron-containing dispersant to molybdenum atoms (Mo) contained in the molybdenum-based friction modifier, [(B)/(Mo)] is 1 or more and 5 or less, and the mass ratio of sulfur atoms (S) to phosphorus atoms (P) contained in the extreme-pressure additive(s), [(S)/(P)] is 10 or more and 20 or less.Type: GrantFiled: March 23, 2016Date of Patent: September 21, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Yoji Sunagawa
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Publication number: 20210002572Abstract: To provide a lubricating oil composition achieving both of high traction coefficient and excellent low temperature fluidity at a higher level and having a high flash point, which contains a naphthene-based synthetic oil (A) having a flash point of 140° C. or higher, a longifolene (B), and a predetermined monoester-based synthetic oil (C), a method for producing the lubricating oil composition, and a continuously variable transmission using the lubricating oil composition.Type: ApplicationFiled: February 28, 2019Publication date: January 7, 2021Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Yoji SUNAGAWA, Takeshi IWASAKI
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Patent number: 10883064Abstract: Provided are; a lubricating oil composition excellent in fuel saving performance, seizure resistance, wear resistance, fatigue lifetime and shear stability, which contains a base oil (A), an olefin polymer (B) having a number average molecular weight of 1,000 or more and 12,000 or less, and a specific sulfur compound (C) and wherein the content of all sulfur atoms based on the total amount of the composition is 1.2% by mass or more and 2.5% by mass or less; and a lubrication method using the lubricating oil composition.Type: GrantFiled: March 13, 2017Date of Patent: January 5, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Yoji Sunagawa
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Publication number: 20200208071Abstract: To provide a lubricating oil composition achieving both of high traction coefficient and excellent low temperature fluidity at a higher level and having a high flash point, which contains a naphthene-based synthetic oil (a) having a flash point of 140° C. or higher, and an ester (b) having 5 to 32 carbon atoms and having a branched chain, wherein the content of the naphthene-based synthetic oil (a) based on the total amount of the composition is 35% by mass or more and less than 80% by mass, a method for producing the lubricating oil composition, and a continuously variable transmission using the lubricating oil composition.Type: ApplicationFiled: January 28, 2019Publication date: July 2, 2020Applicant: IDEMITSU KOSAN CO., LTDInventors: Yoji SUNAGAWA, Takeshi IWASAKI
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Publication number: 20190119597Abstract: Provided are; a lubricating oil composition excellent in fuel saving performance, seizure resistance, wear resistance, fatigue lifetime and shear stability, which contains a base oil (A), an olefin polymer (B) having a number average molecular weight of 1,000 or more and 12,000 or less, and a specific sulfur compound (C) and wherein the content of all sulfur atoms based on the total amount of the composition is 1.2% by mass or more and 2.5% by mass or less; and a lubrication method using the lubricating oil composition.Type: ApplicationFiled: March 13, 2017Publication date: April 25, 2019Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Yoji SUNAGAWA
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Publication number: 20180142180Abstract: An automatic transmission fluid contains: a base oil: a component (A) that is two or more succinimides each having an alkenyl group or an alkyl group, wherein a mass average molecular weight of the alkenyl group or the alkyl group is different in each of the succinimides; a component (B) that is a primary amine having a carbon chain having 12 to 24 carbon atoms; a component (C) that is an aliphatic amine alkylene oxide adduct having a carbon chain having 12 to 20 carbon atoms; and a component (D) that is an amide compound.Type: ApplicationFiled: February 2, 2016Publication date: May 24, 2018Applicant: Idemitsu Kosan Co., Ltd.Inventors: Yoji SUNAGAWA, Atsushi NARA
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Publication number: 20180119051Abstract: Disclosed is a lubricating oil composition containing a base oil, a viscosity index improver, a molybdenum-based friction modifier, a boron-containing dispersant, and at least two extreme-pressure additives selected from a sulfur-based extreme-pressure additive, a phosphorous-based extreme-pressure additive and a sulfur/phosphorus-based extreme-pressure additive, or a sulfur/phosphorus-based extreme-pressure additive. The base oil is a synthetic oil having a kinematic viscosity at 100° C. of 3 mm2/s or more and 10 mm2/s or less, the viscosity index improver is a resin having a number average molecular weight (Mn) of 1,000 or more and 10,000 or less, the mass ratio of boron atoms (B) contained in the boron-containing dispersant to molybdenum atoms (Mo) contained in the molybdenum-based friction modifier, [(B)/(Mo)] is 1 or more and 5 or less, and the mass ratio of sulfur atoms (S) to phosphorus atoms (P) contained in the extreme-pressure additive(s), [(S)/(P)] is 10 or more and 20 or less.Type: ApplicationFiled: March 23, 2016Publication date: May 3, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Yoji SUNAGAWA
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Patent number: 8795513Abstract: Provided is a catalyst for hydrocracking of heavy oil which is excellent in both functions of cracking activity and desulfurization activity with respect to heavy oil by striking a balance between the cracking activity and desulfurization activity and which includes a support including a crystalline aluminosilicate and a porous inorganic oxide excluding the crystalline aluminosilicate, with an active metal being supported on the support, in which (a) the support includes the crystalline aluminosilicate in an amount of 45% by mass or greater and smaller than 60% by mass and the porous inorganic oxide excluding the crystalline aluminosilicate in an amount of greater than 40% by mass and 55% by mass or smaller, based on the sum of an amount of the crystalline aluminosilicate and an amount of the porous inorganic oxide excluding the crystalline aluminosilicate, (b) the active metal is at least one kind of metal selected from metals belonging to Groups 6, 8, 9, and 10 of the Periodic Table, and (c) the catalyst foType: GrantFiled: August 2, 2010Date of Patent: August 5, 2014Assignee: JGC Catalysts and Chemicals Ltd.Inventors: Kazuhiro Inamura, Akira Iino, Nobuyuki Takahashi, Yoji Sunagawa, Mitsunori Watabe, Yuichi Yamahata, Shinya Eura, Yuji Shirahama
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Publication number: 20120193270Abstract: Provided is a catalyst for hydrocracking of heavy oil which is excellent in both functions of cracking activity and desulfurization activity with respect to heavy oil by striking a balance between the cracking activity and desulfurization activity and which includes a support including a crystalline aluminosilicate and a porous inorganic oxide excluding the crystalline aluminosilicate, with an active metal being supported on the support, in which (a) the support includes the crystalline aluminosilicate in an amount of 45% by mass or greater and smaller than 60% by mass and the porous inorganic oxide excluding the crystalline aluminosilicate in an amount of greater than 40% by mass and 55% by mass or smaller, based on the sum of an amount of the crystalline aluminosilicate and an amount of the porous inorganic oxide excluding the crystalline aluminosilicate, (b) the active metal is at least one kind of metal selected from metals belonging to Groups 6, 8, 9, and 10 of the Periodic Table, and (c) the catalyst foType: ApplicationFiled: August 2, 2010Publication date: August 2, 2012Inventors: Kazuhiro Inamura, Akira Ilno, Nobuyuki Takahashi, Yoji Sunagawa, Mitsunori Watabe, Yuichi Yamahata, Shinya Eura, Yuji Shirahama