Patents by Inventor Nobuo Shiratori

Nobuo Shiratori 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 and structure for connecting difficult-to-join pipes to be used at high temperature
    Publication number: 20040195836
    Abstract: Pipes (2, 3) made of a difficult-to-weld material to be used at a high temperature are internally (3a) and externally (2a) threaded at their end portions, an are thread-fastened to each other. The inner and/or outer faces of the jointed pipe portion (1) is sealed by seal means (7, 9), so that the pipes (2, 3) made of difficult-to-weld material to be used at a high temperature are joined by the screw structure, thereby to retain mechanical strength of the jointed pipe portion (1). At the same time, the inner and/or outer faces of the jointed pipe portion (1) is sealed by the seal means (7, 9) to retain the gas tightness of the jointed pipe portion (1).
    Type: Application
    Filed: February 3, 2004
    Publication date: October 7, 2004
    Inventors: Keizo Hosoya, Nobuo Shiratori, Kenji Sato