Patents by Inventor Yutaro Shimizu

Yutaro Shimizu 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: 11739280
    Abstract: A lubricant additive includes a monoester carboxylic acid salt (A) represented by formula (1). In formula (1), R1 represents a single bond between carbon atoms of carbonyl groups, or a divalent hydrocarbon group having 1 to 4 carbon atoms, and R2 represents a hydrocarbon group having 1 to 22 carbon atoms. AO represents an oxyalkylene group of one type selected from oxyalkylene groups having 2 to 4 carbon atoms, or a mixed oxyalkylene group of two or more types selected from oxyalkylene groups having 2 to 4 carbon atoms, and n is an average number of added moles of the oxyalkylene group represented by AO and is 0 to 5. M represents organic ammonium.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: August 29, 2023
    Assignee: NOF CORPORATION
    Inventors: Kazuhiro Oda, Yutaro Shimizu, Hideki Kawamoto
  • 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: 20220154094
    Abstract: A lubricant additive includes a monoester carboxylic acid salt (A) represented by formula (1). In formula (1), R1 represents a single bond between carbon atoms of carbonyl groups, or a divalent hydrocarbon group having 1 to 4 carbon atoms, and R2 represents a hydrocarbon group having 1 to 22 carbon atoms. AO represents an oxyalkylene group of one type selected from oxyalkylene groups having 2 to 4 carbon atoms, or a mixed oxyalkylene group of two or more types selected from oxyalkylene groups having 2 to 4 carbon atoms, and n is an average number of added moles of the oxyalkylene group represented by AO and is 0 to 5. M represents organic ammonium.
    Type: Application
    Filed: March 10, 2020
    Publication date: May 19, 2022
    Inventors: Kazuhiro Oda, Yutaro Shimizu, Hideki Kawamoto
  • 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