Patents by Inventor Kouji Takane
Kouji Takane 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: 11746303Abstract: The present invention relates to a grease composition which can impart excellent durability to a bearing used under a high-speed rotation condition with a DN value of 100,000 or more, wherein the grease composition contains a base oil (A) and a urea-based thickener (B), and particles containing the urea-based thickener (B) in the grease composition satisfy requirement (I) that the particles have an arithmetic mean particle diameter of 2.0 ?m or less on an area basis when measured by a laser diffraction scattering method. The grease composition is used for a bearing used under a high-speed rotation condition with a DN value of 100,000 or more.Type: GrantFiled: January 31, 2020Date of Patent: September 5, 2023Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Kouji Takane, Go Watanabe, Akihiro Shishikura, Jun Yamashita
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Publication number: 20220073837Abstract: The present invention relates to a grease composition which can impart excellent durability to a bearing used under a high-speed rotation condition with a DN value of 100,000 or more, wherein the grease composition contains a base oil (A) and a urea-based thickener (B), and particles containing the urea-based thickener (B) in the grease composition satisfy requirement (I) that the particles have an arithmetic mean particle diameter of 2.0 ?m or less on an area basis when measured by a laser diffraction scattering method. The grease composition is used for a bearing used under a high-speed rotation condition with a DN value of 100,000 or more.Type: ApplicationFiled: January 31, 2020Publication date: March 10, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Kouji TAKANE, Go WATANABE, Akihiro SHISHIKURA, Jun YAMASHITA
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Patent number: 10760030Abstract: A grease of the invention contains a fluorine synthetic oil as a base oil and an inorganic acid salt that is at least one selected from phosphate, tungstate, sulfate and sulfite. The grease of the invention is suitably usable in a bearing, a gear and the like because of an excellent wear resistance and a low environmental burden.Type: GrantFiled: September 17, 2014Date of Patent: September 1, 2020Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Kouji Takane, Tsukasa Yamagishi
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Patent number: 10266787Abstract: A grease composition contains a calcium sulfonate complex grease and an additive. The additive includes an overbased metal sulfonate and an antioxidant. The overbased metal sulfonate is preferably an overbased calcium sulfonate. The antioxidant is preferably an aminic antioxidant.Type: GrantFiled: October 22, 2013Date of Patent: April 23, 2019Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Hiroki Sekiguchi, Yukitoshi Fujinami, Yusuke Nakanishi, Kouji Takane
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Patent number: 10240103Abstract: A bearing grease composition contains a (A) thickener and a (B) base oil, in which the (A) thickener is a urea thickener represented by a formula (I) below, and, in observation of a transmission image in the bearing grease composition, a transmission-image-area ratio of an aggregation part having a transmission image area exceeding 40 ?m2 in the urea thickener is 15% or less relative to a total observation area. R1NHCONHR2NHCONHR3??(I) In the formula, R1 and R3 each independently represent: an (a1) monovalent chain hydrocarbon group having 6 to 22 carbon atoms; an (a2) monovalent alicyclic hydrocarbon group having 6 to 12 carbon atoms; and the like, and R2 represents an (a4) divalent aromatic hydrocarbon group having 6 to 15 carbon atoms.Type: GrantFiled: March 12, 2014Date of Patent: March 26, 2019Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Kouji Takane, Yukitoshi Fujinami, Hiroki Sekiguchi, Yusuke Nakanishi, Yoshiyuki Suetsugu
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Patent number: 10150929Abstract: A urea grease of the invention is prepared by applying shear at a shear rate of 102 s?1 or more to a mixture solution of an amine mixture containing an alicyclic monoamine and a chain aliphatic monoamine, and a diisocyanate compound to cause a reaction in the mixture, in which the urea grease has Peak High32-64s of 1.5 or less and Level High32-64s of 10 or less according to an FAG method.Type: GrantFiled: March 31, 2015Date of Patent: December 11, 2018Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yoshiyuki Suetsugu, Kouji Takane
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Publication number: 20170253826Abstract: A urea grease of the invention is prepared by applying shear at a shear rate of 102 s?1 or more to a mixture solution of an amine mixture containing an alicyclic monoamine and a chain aliphatic monoamine, and a diisocyanate compound to cause a reaction in the mixture, in which the urea grease has Peak High32-64s of 1.5 or less and Level High32-64s of 10 or less according to an FAG method.Type: ApplicationFiled: March 31, 2015Publication date: September 7, 2017Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yoshiyuki SUETSUGU, Kouji TAKANE
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Publication number: 20160237374Abstract: A grease of the invention contains a fluorine synthetic oil as a base oil and an inorganic acid salt that is at least one selected from phosphate, tungstate, sulfate and sulfite. The grease of the invention is suitably usable in a bearing, a gear and the like because of an excellent wear resistance and a low environmental burden.Type: ApplicationFiled: September 17, 2014Publication date: August 18, 2016Applicant: IDEMITSU KOSAN CO. LTD.Inventors: Kouji TAKANE, Tsukasa YAMAGISHI
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Publication number: 20160002558Abstract: A bearing grease composition contains a (A) thickener and a (B) base oil, in which the (A) thickener is a urea thickener represented by a formula (I) below, and, in observation of a transmission image in the bearing grease composition, a transmission-image-area ratio of an aggregation part having a transmission image area exceeding 40 ?m2 in the urea thickener is 15% or less relative to a total observation area. R1NHCONHR2NHCONHR3??(I) In the formula, R1 and R3 each independently represent: an (a1) monovalent chain hydrocarbon group having 6 to 22 carbon atoms; an (a2) monovalent alicyclic hydrocarbon group having 6 to 12 carbon atoms; and the like, and R2 represents an (a4) divalent aromatic hydrocarbon group having 6 to 15 carbon atoms.Type: ApplicationFiled: March 12, 2014Publication date: January 7, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Kouji TAKANE, Yukitoshi FUJINAMI, Hiroki SEKIGUCHI, Yusuke NAKANISHI, Yoshiyuki SUETSUGU
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Publication number: 20150252283Abstract: A grease composition contains a calcium sulfonate complex grease and an additive. The additive includes an overbased metal sulfonate and an antioxidant. The overbased metal sulfonate is preferably an overbased calcium sulfonate. The antioxidant is preferably an aminic antioxidant.Type: ApplicationFiled: October 22, 2013Publication date: September 10, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Hiroki Sekiguchi, Yukitoshi Fujinami, Yusuke Nakanishi, Kouji Takane
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Patent number: 9090848Abstract: The grease composition for a clean environment includes, a base oil, a thickener and a extreme-pressure agent, in which a kinetic viscosity of the base oil at 40° C. is 100˜300 mm2/s, the thickener comprising a lithium complex soap, a content of the thickener is 10˜40 mass % with respect to the total amount of the grease composition.Type: GrantFiled: April 11, 2012Date of Patent: July 28, 2015Assignees: THK CO., LTD., IDEMITSU KOSAN CO., LTD.Inventors: Akira Nogami, Terumoto Hayami, Hiroshi Sampei, Yukitoshi Fujinami, Kouji Takane
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Publication number: 20140045733Abstract: The grease composition for a clean environment includes, a base oil, a thickener and a extreme-pressure agent, in which a kinetic viscosity of the base oil at 40° C. is 100˜300 mm2/s, the thickener comprising a lithium complex soap, a content of the thickener is 10˜40 mass % with respect to the total amount of the grease composition.Type: ApplicationFiled: April 11, 2012Publication date: February 13, 2014Applicants: IDEMITSU KOSAN CO., LTD., THK CO., LTD.Inventors: Akira Nogami, Terumoto Hayami, Hiroshi Sampei, Yukitoshi Fujinami, Kouji Takane