Patents by Inventor Shuichi Sakanoue

Shuichi Sakanoue 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: 10706999
    Abstract: This vibration damping device (10) includes a magnetorheological fluid composition in a cylinder (12). The magnetorheological fluid composition includes magnetic particles; a dispersant having the magnetic particles dispersed therein; and a friction modifier. The friction modifier is an amine-based additive having a hydrocarbon chain having 14 to 22 carbon atoms, preferably an alkyl chain or an alkenyl chain. The content of the friction modifier is 0.1 to 5 mass %.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: July 7, 2020
    Assignees: Honda Motor Co., Ltd., Idemitsu Kosan Co., Ltd.
    Inventors: Kentaro Komori, Daijiro Endo, Shuichi Sakanoue, Seiichiro Yamamoto
  • Publication number: 20200172824
    Abstract: Provided is a lubricating oil composition for a shock absorber, the lubricating oil composition being capable of emitting fluorescence by ultraviolet irradiation while ensuring thermal stability and abrasion resistance. This lubricating oil composition for a shock absorber contains, as components: (A) a base oil; (B) a hydrocarbon compound having a stilbene structure; and (C) a phosphite ester.
    Type: Application
    Filed: November 7, 2018
    Publication date: June 4, 2020
    Applicant: Idemitsu Kosan Co.,Ltd.
    Inventors: Shuichi SAKANOUE, Tatsuya HAMACHI
  • Publication number: 20190284498
    Abstract: To provide a lubricating oil composition having excellent viscosity characteristics and a property of difficulty in evaporation, which contains a base oil having a kinematic viscosity at 40° C. of 4.0 mm2/s or more and less than 6.0 mm2/s, a kinematic viscosity at 100° C. of 1.0 mm2/s or more and less than 2.0 mm2/s and a flash point of 140° C. or more, and a viscosity index improver, and has a Brookfield viscosity at ?40° C. of 750 mPa·s or less, a kinematic viscosity at 60° C. of 5.5 mm2/s or more, and a NOACK value at 145° C. for 1 hour of 10% by mass or less.
    Type: Application
    Filed: November 17, 2017
    Publication date: September 19, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi SAKANOUE, Tatsuya HAMACHI
  • Publication number: 20190119604
    Abstract: Provided are a lubricating oil composition for shock absorber, containing a base oil and a comb polymer having a mass average molecular weight of 5×104 or more and 1×106 or less, which has a high viscosity index and provides a shock absorber capable of keeping a damping force thereof substantially constant at any temperature and exhibiting excellent damping force characteristics; a method of producing the lubricating oil composition for shock absorber; a damping method; and a shock absorber.
    Type: Application
    Filed: April 5, 2017
    Publication date: April 25, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi SAKANOUE, Tatsuya HAMACHI
  • Publication number: 20190051437
    Abstract: This vibration damping device (10) includes a magnetorheological fluid composition in a cylinder (12). The magnetorheological fluid composition includes magnetic particles; a dispersant having the magnetic particles dispersed therein; and a friction modifier. The friction modifier is an ester-based additive having a hydrocarbon chain having 14 to 22 carbon atoms, preferably an alkyl chain or an alkenyl chain. The content of the friction modifier is 0.1 to 5 mass %.
    Type: Application
    Filed: September 15, 2016
    Publication date: February 14, 2019
    Inventors: Kentaro KOMORI, Daijiro ENDO, Shuichi SAKANOUE, Seiichiro YAMAMOTO
  • Publication number: 20180182521
    Abstract: This vibration damping device (10) includes a magnetorheological fluid composition in a cylinder (12). The magnetorheological fluid composition includes magnetic particles; a dispersant having the magnetic particles dispersed therein; and a friction modifier. The friction modifier is an amine-based additive having a hydrocarbon chain having 14 to 22 carbon atoms, preferably an alkyl chain or an alkenyl chain. The content of the friction modifier is 0.1 to 5 mass %.
    Type: Application
    Filed: September 15, 2016
    Publication date: June 28, 2018
    Inventors: Kentaro KOMORI, Daijiro ENDO, Shuichi SAKANOUE, Seiichiro YAMAMOTO
  • Publication number: 20170247630
    Abstract: A lubricating oil composition of the invention contains: a base oil; at least one of acid phosphate represented by formulae (1) and (2) below; and an antioxidant. In the above formulae: R1, R2 and R3 are alkyl groups; and at least one of R1 and R2 has 20 to 30 carbon atoms while R3 has 20 to 30 carbon atoms.
    Type: Application
    Filed: May 22, 2015
    Publication date: August 31, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Shuichi SAKANOUE
  • Patent number: 9745536
    Abstract: The lubricating oil composition for a shock absorber of the present invention contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a tertiary amine represented by the following general formula (I), and (C) a zinc dithiophosphate represented by the following general formula (II): wherein R1 and R2 each independently represent an aliphatic hydrocarbon group having from 1 to 5 carbon atoms, and R3 represents an aliphatic hydrocarbon group having from 12 to 24 carbon atoms in the general formula (I), wherein R4 to R7 each independently represent one selected from an alkyl group and an alkenyl group each having 1 to 24 carbon atoms in the general formula (II).
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: August 29, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Patent number: 9695379
    Abstract: Provided is a lubricating oil composition for a shock absorber excellent in thermal stability and capable of reducing the friction factor for rubber. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a zinc dithiophosphate represented by the following general formula (I), (C) a fatty acid amide and (D) a polyalcohol ester. In the formula, R1 to R4 each independently represent at least one selected from a linear, branched or cyclic alkyl group having from 6 to 20 carbon atoms and a linear, branched or cyclic alkenyl group having from 6 to 20 carbon atoms.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: July 4, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Patent number: 9688941
    Abstract: Provided is a lubricating oil composition for a shock absorber, which realizes excellent riding comfort in low-temperature and high-temperature environments and can suppress worsening of riding comfort with time, which is caused by evaporation and shearing of the lubricating oil. The lubricating oil composition for a shock absorber contains (A) a base oil having a pour point of lower than ?40° C. and a kinematic viscosity at 80° C. of from 2.0 to 2.7 mm2/s, (B-1) from 1 to 15% by mass of a polymethacrylate having a weight-average molecular weight of from 10,000 to less than 100,000, and (B-2) from 0.1 to 5% by mass of a polymethacrylate having a weight-average molecular weight of from 100,000 to 200,000.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: June 27, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Publication number: 20160369200
    Abstract: The lubricating oil composition for a shock absorber of the present invention contains (A) a base oil containing a mineral oil and/or a synthetic oil, (B) a tertiary amine represented by the following general formula (I), (C) a zinc dithiophosphate represented by the following general formula (II), and (D) a phosphorus acid ester amine salt, wherein R1 and R2 each independently represent an aliphatic hydrocarbon group having from 1 to 5 carbon atoms, and R3 represents an aliphatic hydrocarbon group having from 12 to 24 carbon atoms, in the general formula (I), wherein R4 to R7 each independently represent one selected from an alkyl group and an alkenyl group each having from 1 to 24 carbon atoms, in the general formula (II).
    Type: Application
    Filed: August 25, 2014
    Publication date: December 22, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Shuichi SAKANOUE
  • Patent number: 9458405
    Abstract: A lubricating oil composition includes: a base oil; a component (A) that is a dialkyl hydrogen phosphite; a component (B) that is a sulfur antioxidant; and a component (C) that is a polyalkenyl succinimide. Since the lubricating oil composition of the invention exhibits an excellent lubricity to both iron metal and copper metal and an excellent heat stability, the lubricating oil composition of the invention is suitable for a shock absorber of an automobiles and the like.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: October 4, 2016
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Publication number: 20160194578
    Abstract: Provided is a lubricating oil composition for a shock absorber, which realizes excellent riding comfort in low-temperature and high-temperature environments and can suppress worsening of riding comfort with time, which is caused by evaporation and shearing of the lubricating oil. The lubricating oil composition for a shock absorber contains (A) a base oil having a pour point of lower than ?40° C. and a kinematic viscosity at 80° C. of from 2.0 to 2.7 mm2/s, (B-1) from 1 to 15% by mass of a polymethacrylate having a weight-average molecular weight of from 10,000 to less than 100,000, and (B-2) from 0.1 to 5% by mass of a polymethacrylate having a weight-average molecular weight of from 100,000 to 200,000.
    Type: Application
    Filed: August 25, 2014
    Publication date: July 7, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi SAKANOUE, Aya AOKI
  • Publication number: 20160194576
    Abstract: Provided is a lubricating oil composition for a shock absorber excellent in thermal stability and capable of reducing the friction factor for rubber. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a zinc dithiophosphate represented by the following general formula (I), (C) a fatty acid amide and (D) a polyalcohol ester. In the formula, R1 to R4 each independently represent at least one selected from a linear, branched or cyclic alkyl group having from 6 to 20 carbon atoms and a linear, branched or cyclic alkenyl group having from 6 to 20 carbon atoms.
    Type: Application
    Filed: August 25, 2014
    Publication date: July 7, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi SAKANOUE, Aya AOKI
  • Publication number: 20160186090
    Abstract: The lubricating oil composition for a shock absorber of the present invention contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a tertiary amine represented by the following general formula (I), and (C) a zinc dithiophosphate represented by the following general formula (II): wherein R1 and R2 each independently represent an aliphatic hydrocarbon group having from 1 to 5 carbon atoms, and R3 represents an aliphatic hydrocarbon group having from 12 to 24 carbon atoms in the general formula (I), wherein R4 to R7 each independently represent one selected from an alkyl group and an alkenyl group each having 1 to 24 carbon atoms in the general formula (II).
    Type: Application
    Filed: August 25, 2014
    Publication date: June 30, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi SAKANOUE, Aya AOKI
  • Publication number: 20150240182
    Abstract: A lubricating oil composition includes: a base oil; a component (A) that is a dialkyl hydrogen phosphite; a component (B) that is a sulfur antioxidant; and a component (C) that is a polyalkenyl succinimide. Since the lubricating oil composition of the invention exhibits an excellent lubricity to both iron metal and copper metal and an excellent heat stability, the lubricating oil composition of the invention is suitable for a shock absorber of an automobiles and the like.
    Type: Application
    Filed: August 19, 2013
    Publication date: August 27, 2015
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Publication number: 20150184107
    Abstract: To provide a shock absorber lubricating oil composition which realizes such a lubricity between rubber and chromium; i.e., materials generally employed in oil seals and piston rods of shock absorbers, that the low-speed-side friction coefficient is low; the high-speed-side friction coefficient is high; and the ratio of the low-speed-side friction coefficient to the high-speed-side friction coefficient is small. The shock absorber lubricating oil composition includes (A) a base oil composed of a mineral oil and/or a synthetic oil, and (B) a dithiophosphate ester represented by formula (1).
    Type: Application
    Filed: July 11, 2013
    Publication date: July 2, 2015
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Publication number: 20150038384
    Abstract: To provide a lubricating oil composition for a shock absorber for preventing wearing a piston rod and a guide bush in a shock absorber, which composition lowers the friction coefficient at the interface between bronze and chromium and reduces wear area of bronze. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, and (B) a polyhydric alcohol partial ester having a C10 to C20 fatty acid residue, in an amount of 0.05 mass % to 10 mass %, with respect to the total amount of the composition.
    Type: Application
    Filed: March 19, 2013
    Publication date: February 5, 2015
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Shuichi Sakanoue
  • Patent number: 6878677
    Abstract: The invention provides a refrigerator oil composition comprising a base oil of a mineral oil and/or a synthetic oil, and containing (a) a partial ester of a polyalcohol and a fatty acid and (b) an acid phosphate or its amine salt; and a refrigerator oil composition comprising a base oil of a mineral oil and/or a synthetic oil, and containing any of (a) acid phosphates or their amine salts, (b) acetylene glycol alkylene oxide adducts, (c) potassium salts of fatty acids, etc., (d) organic acids, and (e) fatty acid amides. The refrigerator oil compositions have good lubricity and are especially effective for reducing the friction in both the oil region and the extreme-pressure region in the sliding area between aluminium materials and steel materials.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: April 12, 2005
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Shuichi Sakanoue, Masahiko Takesue, Youichiro Jido, Minoru Takagi, Shoichi Tominaga, Hiroshi Nagakawa
  • 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