Patents by Inventor Yasuhito NAKAHARA

Yasuhito NAKAHARA 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).

  • Lubricant composition
    Patent number: 11946013
    Abstract: A lubricating oil composition which contains a base oil and a fluorine compound and may have improved cooling performance. The base oil may contain a mineral oil. The base oil may have a kinematic viscosity in a range of from 1 to 25 mm2/s at 40° C. The content of the fluorine compound may be in a range of from 3 to 30% by weight based on the total amount of the composition.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: April 2, 2024
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yasuhito Nakahara, Hiroyuki Tatsumi, Keiichi Narita, Koki Ito
  • LUBRICANT COMPOSITION
    Publication number: 20230039111
    Abstract: A lubricating oil composition which contains a base oil and a fluorine compound and may have improved cooling performance. The base oil may contain a mineral oil. The base oil may have a kinematic viscosity in a range of from 1 to 25 mm2/s at 40° C. The content of the fluorine compound may be in a range of from 3 to 30% by weight based on the total amount of the composition.
    Type: Application
    Filed: January 15, 2021
    Publication date: February 9, 2023
    Applicant: Idemitsu Kosan Co.,Ltd.
    Inventors: Yasuhito NAKAHARA, Hiroyuki TATSUMI, Keiichi NARITA, Koki ITO
  • LUBRICATING OIL COMPOSITION, LUBRICATION METHOD, AND GEAR
    Publication number: 20190292482
    Abstract: Provided are a lubricating oil composition excellent in anti-seizing properties and ant-wear properties, containing a base oil containing at least a mineral oil and a sulfur- and phosphorus-containing anti-wear agent, a mass ratio (S/P ratio) of a sulfur atom and a phosphorus atom contained in the composition being 7.5 or more and 16 or less; and a lubrication method and a gear each using the same.
    Type: Application
    Filed: October 27, 2017
    Publication date: September 26, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhito NAKAHARA, Masato YOKOMIZO, Hideki KAMANO