Patents by Inventor Kanzaburo Kubota

Kanzaburo Kubota 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).

  • Pipe die for underwater pelletizer
    Patent number: 4470791
    Abstract: A pipe die for an underwater pelletizer is provided in which a nozzle plate is provided on the surface of a pipe die, the nozzle plate having a hole coaxially with and of the same diameter as a pipe of the pipe die. The nozzle plate is made of a material of the same quality as the die body and is provided with a hardened layer at its cutter side surface. Replacement and repair of the nozzle plate is improved by connecting the same to said die body by bonding the whole junction plane therebetween.
    Type: Grant
    Filed: August 4, 1983
    Date of Patent: September 11, 1984
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Yoshitomo Tanaka, Yoshiki Maki, Kanzaburo Kubota