Patents by Inventor Tsurugi Kimura

Tsurugi Kimura 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 of heat-treatment of welded pipe and apparatus therefor
    Patent number: 4142713
    Abstract: In the method of heat-treatment of welded pipe having a reinforcement weld bead therealong by heating the pipe by using an induction heating device and then by cooling it, the bead which has just been heated by the induction heating device, is further heated by a bead heater to a temperature such that the temperature difference between the metal of the pipe and the bead is smaller than a temperature difference which will produce a bad influence on the quality of the pipe.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: March 6, 1979
    Assignee: Nippon Steel Corporation
    Inventors: Hajime Nakasugi, Tsurugi Kimura, Teruo Tanimoto, Tsutomu Sakimoto