Patents by Inventor Ryoichi Kume

Ryoichi Kume 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).

  • Method for preventing disbonding of weld-cladding
    Patent number: 4564402
    Abstract: Disclosed is a method for preventing hydrogen-induced disbonding of austenitic stainless steel cladding, which is made on a low alloy steel, in a reactor vessel which has been used in a high-temperature and high-pressure hydrogen atmosphere. The clad steel is cooled from its operating temperature to a temperature which is not lower than 100.degree. C. Then, the clad steel is maintained at a temperature between said temperature which is not lower than 100.degree. C. and a postweld heat treatment so as to effect hydrogen degassing treatment. Thereafter, the clad steel is further cooled.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: January 14, 1986
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Norio Morishige, Ryoichi Kume