Patents by Inventor Seita UEDA

Seita UEDA 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 additive, lubricant additive composition, and lubricating oil composition containing the same
    Patent number: 11739283
    Abstract: A lubricant additive capable of imparting various functions to a lubricant base oil contains an ester compound (A) represented by formula (1) and an ester compound (B) represented by formula (2). (A):(B) being a mass ratio of the ester compound (A) to the ester compound (B) is 99:1 to 80:20.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: August 29, 2023
    Assignee: NOF CORPORATION
    Inventors: Yutaro Shimizu, Hideki Kawamoto, Kazuhiro Oda, Seita Ueda
  • LUBRICANT ADDITIVE, LUBRICANT ADDITIVE COMPOSITION, AND LUBRICATING OIL COMPOSITION CONTAINING THE SAME
    Publication number: 20220154096
    Abstract: A lubricant additive capable of imparting various functions to a lubricant base oil contains an ester compound (A) represented by formula (1) and an ester compound (B) represented by formula (2). (A):(B) being a mass ratio of the ester compound (A) to the ester compound (B) is 99:1 to 80:20.
    Type: Application
    Filed: March 10, 2020
    Publication date: May 19, 2022
    Inventors: Yutaro Shimizu, Hideki Kawamoto, Kazuhiro Oda, Seita Ueda
  • Ester for refrigerator oils
    Patent number: 11225623
    Abstract: It is provided an ester for a refrigerator oil and of mixed alcohols and mixed monocarboxylic acids. The mixed alcohols include dipentaerythritol and tripentaerythritol in a mass ratio of 90/10 to 99.7/0.3, and the mixed monocarboxylic acids include n-pentanoic acid and 2-methyl butanoic acid in a mass ratio of 50/50 to 80/20. The ester has a kinematic viscosity of 50 to 150 mm2/s at 40° C.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 18, 2022
    Assignee: NOF CORPORATION
    Inventors: Takeshi Kajiki, Fumitaka Yoshikawa, Seita Ueda
  • ESTER FOR REFRIGERATOR OILS
    Publication number: 20210207050
    Abstract: It is provided an ester for a refrigerator oil and of mixed alcohols and mixed monocarboxylic acids. The mixed alcohols include dipentaerythritol and tripentaerythritol in a mass ratio of 90/10 to 99.7/0.3, and the mixed monocarboxylic acids include n-pentanoic acid and 2-methyl butanoic acid in a mass ratio of 50/50 to 80/20. The ester has a kinematic viscosity of 50 to 150 mm2/s at 40° C.
    Type: Application
    Filed: December 19, 2016
    Publication date: July 8, 2021
    Applicant: NOF CORPORATION
    Inventors: Takeshi KAJIKI, Fumitaka YOSHIKAWA, Seita UEDA