Patents by Inventor Sigezo Kawakami

Sigezo Kawakami 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).

  • Apparatus for scraping away substances adhering to inner wall of rotary kiln
    Patent number: 4147505
    Abstract: Apparatus for performing operations of agitating a material to be treated in a rotary kiln and scraping away substances adhering to the inner wall of the rotary kiln effectively at a high efficiency so as to operate the rotary kiln continuously for a long time and perform the heat treatment in the rotary kiln very smoothly.
    Type: Grant
    Filed: April 8, 1977
    Date of Patent: April 3, 1979
    Assignee: Kobe Steel, Ltd.
    Inventors: Sigezo Kawakami, Kunihiko Tsuji, Hiroshi Omura, Hisai Ishizuka