Patents by Inventor Hideto Kamimura

Hideto Kamimura 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).

  • Patent number: 9068136
    Abstract: A lubricating oil composition for high-temperature applications contains (A) a pyromellitate ester, (B) a sulfur-containing triazine antioxidant, and (C) a thiophosphoric acid ester antioxidant. When the lubricating oil composition for high-temperature applications according to the invention is applied to a chain, a gear, a bearing and the like, an amount of evaporation of the lubricating oil composition is restrained for a long time and fluidity thereof is also kept for a long time.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: June 30, 2015
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Takuya Ohno, Tahei Okada, Hideto Kamimura
  • Patent number: 8722595
    Abstract: The present invention provides a lubricating oil composition capable of achieving a lubricating property, a thermal stability, an oxidation stability, an anti-discoloring property and an anti-varnishing performance with a higher level by compounding a phosphorus compound having a specific structure in a base oil, as well as a lubricating oil composition for internal combustion engines which is excellent in wear resistance, high-temperature detergency and base number retention property although it has a low phosphorus content, a low sulfur content and a low sulfated ash content.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: May 13, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hideki Kamano, Junichi Yagi, Hideto Kamimura
  • Patent number: 8373011
    Abstract: The present invention provides a process for producing a saturated aliphatic hydrocarbon prepared using an ?-olefin as a raw material and represented by the general formula (1), including the steps of: (I) producing a vinylidene olefin by dimerizing the ?-olefin in the presence of a metallocene complex catalyst; (II) further dimerizing the vinylidene olefin in the presence of an acid catalyst; and (III) hydrogenating the obtained dimer. Further, there are provided a lubricant composition containing the saturated aliphatic hydrocarbon compound produced by the above process, a bearing oil consisting of the lubricant composition, and making use of the same, a bearing and gyral equipment. The saturated aliphatic hydrocarbon compounds produced by the process of the present invention have low-temperature fluidity, exhibiting low evaporativity, and excellent in thermal stability and oxidation stability.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: February 12, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Haruhito Sato, Hideto Kamimura
  • Publication number: 20130012417
    Abstract: A lubricating oil composition for high-temperature applications contains (A) a pyromellitate ester, (B) a sulfur-containing triazine antioxidant, and (C) a thiophosphoric acid ester antioxidant. When the lubricating oil composition for high-temperature applications according to the invention is applied to a chain, a gear, a bearing and the like, an amount of evaporation of the lubricating oil composition is restrained for a long time and fluidity thereof is also kept for a long time.
    Type: Application
    Filed: March 17, 2011
    Publication date: January 10, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Takuya Ohno, Tahei Okada, Hideto Kamimura
  • Patent number: 8318645
    Abstract: The lubricating oil composition of the invention includes a base oil composed of mineral oil and/or synthetic oil, an amine antioxidant (A-1) in an amount of 800 ppm or more as reduced to the total amount of nitrogen, and a compound containing phosphorus and/or sulfur (A-2). The invention provides a compressor oil which realizes thermal/oxidation stability, resistance to sludge formation, lubricity, long service life, and water separation at high levels.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: November 27, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Hideto Kamimura
  • Patent number: 8318644
    Abstract: The invention provides a lube oil which exhibits low vapor pressure despite having low viscosity, is non-flammable, exhibits excellent heat resistance, has tribological characteristics equivalent to those of conventional hydrocarbon-based lube oils, and can be used for a long time under very severe conditions such as high temperature and vacuum. The lube oil contains, as a base oil, an ionic liquid formed of a cation and an anion and having an ion concentration of 1 mol/dm3 or more.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: November 27, 2012
    Assignees: Idemitsu Kosan Co., Ltd.
    Inventors: Hideto Kamimura, Shigeyuki Mori
  • Patent number: 8293693
    Abstract: The present invention provides a conductive lubricant composition, characterized in that the composition contains a lubricating base oil (A) other than a silicone oil, and a non-metallic antistatic agent (B), and exhibits a kinematic viscosity of 25 mm2/s or less at 40° C., a viscosity index of 100 or higher, a flash point of 150° C. or higher, and a volume resistivity of 1×1010?·cm or less at 25° C. The invention also provides a bearing oil formed from the lubricant composition.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: October 23, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hideto Kamimura, Tatsuya Egawa
  • Patent number: 8258089
    Abstract: Provided is a grease composition with a long service life under high-temperature conditions, considerable low-evaporability, and incombustibility. The invention provides a grease composition comprising, as a base oil, an ionic liquid formed of a cation and an anion and having an ion concentration of 1 mol/dm3 or more as measured at 20° C., and a thickener, wherein the grease composition has a dropping point of 260° C. or higher.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: September 4, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yukitoshi Fujinami, Hideto Kamimura
  • Publication number: 20110239972
    Abstract: The present invention provides a lubricating oil composition capable of achieving a lubricating property, a thermal stability, an oxidation stability, an anti-discoloring property and an anti-varnishing performance with a higher level by compounding a phosphorus compound having a specific structure in a base oil, as well as a lubricating oil composition for internal combustion engines which is excellent in wear resistance, high-temperature detergency and base number retention property although it has a low phosphorus content, a low sulfur content and a low sulfated ash content.
    Type: Application
    Filed: September 18, 2009
    Publication date: October 6, 2011
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hideki Kamano, Junichi Yagi, Hideto Kamimura
  • Publication number: 20100008810
    Abstract: A lubricating oil composition for a rotary gas compressor has a kinematic viscosity of 5 mm2/s or less at 100 degrees C., a flash point of 200 degrees C. or more and 5 volume % distillation temperature of 350 degrees C. or more. The lubricating oil composition contains at least either one of a phosphorous extreme pressure agent and an antioxidant.
    Type: Application
    Filed: December 21, 2007
    Publication date: January 14, 2010
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Hideto Kamimura
  • Publication number: 20090281008
    Abstract: Provided is a grease composition with a long service life under high-temperature conditions, considerable low-evaporability, and incombustibility. The invention provides a grease composition comprising, as a base oil, an ionic liquid formed of a cation and an anion and having an ion concentration of 1 mol/dm3 or more as measured at 20° C., and a thickener having a dropping point of 260° C. or higher.
    Type: Application
    Filed: April 5, 2006
    Publication date: November 12, 2009
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Yukitoshi Fujinami, Hideto Kamimura
  • Publication number: 20090186785
    Abstract: The lubricating oil composition of the invention includes a base oil composed of mineral oil and/or synthetic oil, an amine antioxidant (A-1) in an amount of 800 ppm or more as reduced to the total amount of nitrogen, and a compound containing phosphorus and/or sulfur (A-2). The invention provides a compressor oil which realizes thermal/oxidation stability, resistance to sludge formation, lubricity, long service life, and water separation at high levels.
    Type: Application
    Filed: December 7, 2006
    Publication date: July 23, 2009
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Hideto Kamimura
  • Publication number: 20090170738
    Abstract: The present invention provides a lubricating composition, particularly a grease composition and a lubricating oil composition, containing an aralkylated diphenylamine and a phenol compound having a molecular weight of not less than 340 which are compounded into a base oil. The lubricating composition is hardly decomposed or volatilized even at high temperatures and has a long oxidation life so that the lubricating characteristics thereof can be maintained for a long period of time.
    Type: Application
    Filed: September 28, 2006
    Publication date: July 2, 2009
    Applicant: Idemitsu Kosan co., Ltd.
    Inventors: Yukitoshi Fujinami, Hideto kamimura
  • Publication number: 20090116771
    Abstract: Disclosed is a lubricant composition comprising a base oil which contains 50% by mass or more of at least one of an ?-olefin oligomer and a hydrogenated product of an ?-olefin oligomer and in which the kinematic viscosity and the flash point satisfy the following relational equation (I): Flash point (° C.)?49×ln ?+90??(I) [provided that ? is a kinematic viscosity at 40° C.]. The lubricant composition contains a base oil which has little effect on a resin or elastomer because it is a nonpolar compound, in addition to having an extremely small amount of evaporation and a high flash point despite a low viscosity, and is suitable for various applications, in particular, as bearing oils.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 7, 2009
    Applicant: Idemitsu kosan co. Ltd
    Inventors: Hideto Kamimura, Katsumi Hashimoto
  • Publication number: 20090069204
    Abstract: A lubricant for an oil retaining bearing containing 1 to 100% by mass of an ionic liquid. The lubricant has a low vapor pressure, low flammability, excellent heat resistance and ability to suppress the emanation of low volatile components and decomposed gases during use, or a lubricant for an oil retaining bearing which has antistatic property and is capable of grounding the static electricity generated by flow charging of the lubricant.
    Type: Application
    Filed: July 14, 2006
    Publication date: March 12, 2009
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hideto Kamimura, Shukichi Shimoda, Katsumi Hashimoto
  • Publication number: 20080146469
    Abstract: The present invention provides a process for producing a saturated aliphatic hydrocarbon prepared using an ?-olefin as a raw material and represented by the general formula (1), including the steps of: (I) producing a vinylidene olefin by dimerizing the ?-olefin in the presence of a metallocene complex catalyst; (II) further dimerizing the vinylidene olefin in the presence of an acid catalyst; and (III) hydrogenating the obtained dimer. Further, there are provided a lubricant composition containing the saturated aliphatic hydrocarbon compound produced by the above process, a bearing oil consisting of the lubricant composition, and making use of the same, a bearing and gyral equipment. The saturated aliphatic hydrocarbon compounds produced by the process of the present invention have low-temperature fluidity, exhibiting low evaporativity, and excellent in thermal stability and oxidation stability.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 19, 2008
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Haruhito Sato, Hideto Kamimura
  • Publication number: 20070027038
    Abstract: The invention provides a lube oil which exhibits low vapor pressure despite having low viscosity, is non-flammable, exhibits excellent heat resistance, has tribological characteristics equivalent to those of conventional hydrocarbon-based lube oils, and can be used for a long time under very severe conditions such as high temperature and vacuum. The lube oil contains, as a base oil, an ionic liquid formed of a cation and an anion and having an ion concentration of 1 mol/dm3 or more.
    Type: Application
    Filed: October 8, 2004
    Publication date: February 1, 2007
    Applicants: IDEMITSU LOSAN CO., LTD., SHIGEYUKI MORI
    Inventors: Hideto Kamimura, Shigeyuki Mori
  • Publication number: 20060199747
    Abstract: The present invention provides a conductive lubricant composition, characterized in that the composition contains a lubricating base oil (A) other than a silicone oil, and a non-metallic antistatic agent (B), and exhibits a kinematic viscosity of 25 mm2/s or less at 40° C., a viscosity index of 100 or higher, a flash point of 150° C. or higher, and a volume resistivity of 1×1010 ?·cm or less at 25° C. The invention also provides a bearing oil formed from the lubricant composition.
    Type: Application
    Filed: April 2, 2004
    Publication date: September 7, 2006
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hideto Kamimura, Tatsuya Egawa
  • Patent number: 6815402
    Abstract: A lubricating oil composition which comprises at least one compound selected from specific cyclic organic phosphorus compounds is disclosed. The lubricating oil composition exhibits excellent extreme pressure property, seizure resistance and wear resistance and is advantageously used as bearing oil, gear oil, hydraulic oil and refrigerator oil.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: November 9, 2004
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshinori Tazaki, Hideto Kamimura, Shuichi Sakanoue
  • Patent number: RE39382
    Abstract: The present invention relates to a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time, and it is a lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 100% by weight of a specific aromatic ester and (b) 0 to 80% by weight of another base oil with (c) 0.1 to 10% by weight, based on the total amount of the lubricant composition, of an antioxidant.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: November 7, 2006
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hideto Kamimura, Hiroshi Nagakawa