Patents by Inventor Kengo Nozawa

Kengo Nozawa 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).

  • Steel pipe hardening apparatus
    Patent number: 4376528
    Abstract: An apparatus for hardening a steel pipe by quenching it with cooling water, comprises a cylindrical assembly including a casing and a cover, said casing being removably mated with said cover so that said cylindrical assembly may be selectively opened or closed, a plurality of supports disposed within said cylindrical assembly for supporting a steel pipe to be hardened so as to align the steel pipe with said cylindrical assembly, and nozzle means disposed at one end of said cylindrical assembly for injecting cooling water into said cylindrical assembly for cooling water to flow both outside and inside the steel pipe in the longitudinal direction thereof. The steel pipe is uniformly quenched over its entire length.
    Type: Grant
    Filed: September 3, 1981
    Date of Patent: March 15, 1983
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshio Ohshimatani, Yukihiro Mimura, Kengo Nozawa, Tatsuo Maguchi, Keiichiro Takitani