Patents by Inventor Shuhei Kawaguchi

Shuhei Kawaguchi 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).

  • Engine exhaust valve for large ship and method for manufacturing the same
    Patent number: 10557388
    Abstract: The present invention relates to an exhaust valve of a diesel engine for a large ship, containing a shall part and an umbrella part that are integrated with each other and made of an Ni—Cr—Al system Ni-base age-precipitated alloy, in which the exhaust valve has a layered structure and hardness of 600 HV or less as a whole, and the layered structure contains a layer formed of an ?-Cr phase having a thickness of 150 nm or more that is aged beyond peak mechanical strength.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: February 11, 2020
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Shuhei Kawaguchi, Koichi Uno, Mototsugu Osaki
  • ENGINE EXHAUST VALVE FOR LARGE SHIP AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20160215660
    Abstract: The present invention relates to an exhaust valve of a diesel engine for a large ship, containing a shall part and an umbrella part that are integrated with each other and made of an Ni—Cr—Al system Ni-base age-precipitated alloy, in which the exhaust valve has a layered structure and hardness of 600 HV or less as a whole, and the layered structure contains a layer formed of an ?-Cr phase having a thickness of 150 nm or more that is aged beyond peak mechanical strength.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Inventors: Shuhei Kawaguchi, Koichi Uno, Mototsugu Osaki