Patents by Inventor Takayuki YOGUCHI

Takayuki YOGUCHI 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).

  • Piston ring
    Patent number: 10982767
    Abstract: A piston ring which is resinous includes an annular main body portion having an inner peripheral surface and an outer peripheral surface facing each other and a pair of side surfaces interconnecting the inner peripheral surface and the outer peripheral surface and a joint portion 3 formed in the main body portion. The joint portion has a step shape when viewed from at least one of the pair of side surfaces and the outer peripheral surface. The outer peripheral surface has a tapered surface having an outer diameter increasing from a side of one side surface of the pair of side surfaces of the main body portion toward a side of the other side surface.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: April 20, 2021
    Inventors: Hiroshi Shimizu, Takayuki Yoguchi, Takayuki Kondo, Masaaki Fujita
  • PISTON RING
    Publication number: 20200018395
    Abstract: A piston ring which is resinous includes an annular main body portion having an inner peripheral surface and an outer peripheral surface facing each other and a pair of side surfaces interconnecting the inner peripheral surface and the outer peripheral surface and a joint portion 3 formed in the main body portion. The joint portion has a step shape when viewed from at least one of the pair of side surfaces and the outer peripheral surface. The outer peripheral surface has a tapered surface having an outer diameter increasing from a side of one side surface of the pair of side surfaces of the main body portion toward a side of the other side surface.
    Type: Application
    Filed: January 10, 2018
    Publication date: January 16, 2020
    Applicant: KABUSHIKI KAISHA RIKEN
    Inventors: Hiroshi SHIMIZU, Takayuki YOGUCHI, Takayuki KONDO, Masaaki FUJITA