Patents by Inventor Masahiro UCHIUMI

Masahiro UCHIUMI 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).

  • Combined oil ring
    Patent number: 11873780
    Abstract: Provided is a combined oil ring that can provide reduction in oil consumption of the engine oil without degrading the oil sealing performance between the lower surface of the side rail and the lower surface of the oil ring groove even when the tension of the combined oil ring is reduced.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: January 16, 2024
    Assignee: NIPPON PISTON RING CO., LTD.
    Inventors: Masahiro Uchiumi, Kenji Arai, Kazuhiro Sameshima, Makoto Kajiwara, Hajime Ando
  • COMBINED OIL RING
    Publication number: 20220090558
    Abstract: Provided is a combined oil ring that can provide reduction in oil consumption of the engine oil without degrading the oil sealing performance between the lower surface of the side rail and the lower surface of the oil ring groove even when the tension of the combined oil ring is reduced.
    Type: Application
    Filed: January 31, 2020
    Publication date: March 24, 2022
    Applicant: NIPPON PISTON RING CO., LTD.
    Inventors: Masahiro UCHIUMI, Kenji ARAI, Kazuhiro SAMESHIMA, Makoto KAJIWARA, Hajime ANDO