Patents by Inventor Jun Itsuki

Jun Itsuki 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 base oil for power transmission
    Patent number: 10947472
    Abstract: An object of the present invention is to provide a lubricant base oil for power transmission (in particular, a lubricant base oil for traction drives) having a high traction coefficient and a high flash point. The present invention relates to a lubricant base oil for power transmission comprising an alicyclic dicarboxylic acid diester compound represented by general formula (1): wherein R1 to R5 are the same or different, and each represents hydrogen or linear or branched C1-4 alkyl, and two R1, two R2, two R3, two R4, and two R5 may respectively be the same or different; and ring A is wherein R represents C1-3 alkyl, and n represents 0, 1, or 2; when n represents 2, R may be the same or different.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: March 16, 2021
    Assignee: NEW JAPAN CHEMICAL CO., LTD.
    Inventors: Akinobu Takegami, Shinya Tsujimoto, Yasuyuki Kawahara, Jun Itsuki
  • LUBRICANT BASE OIL FOR POWER TRANSMISSION
    Publication number: 20190249103
    Abstract: An object of the present invention is to provide a lubricant base oil for power transmission (in particular, a lubricant base oil for traction drives) having a high traction coefficient and a high flash point. The present invention relates to a lubricant base oil for power transmission comprising an alicyclic dicarboxylic acid diester compound represented by general formula (1): wherein R1 to R5 are the same or different, and each represents hydrogen or linear or branched C1-4 alkyl, and two R1, two R2, two R3, two R4, and two R5 may respectively be the same or different; and ring A is wherein R represents C1-3 alkyl, and n represents 0, 1, or 2; when n represents 2, R may be the same or different.
    Type: Application
    Filed: July 5, 2017
    Publication date: August 15, 2019
    Applicant: NEW JAPAN CHEMICAL CO., LTD.
    Inventors: Akinobu Takegami, Shinya Tsujimoto, Yasuyuki Kawahara, Jun Itsuki