Patents by Inventor Tamotsu Negishi

Tamotsu Negishi 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).

  • Calcination apparatus for use in fluidized-bed burning installation for powdery raw material
    Patent number: 4759711
    Abstract: Upper and lower vortex chambers are disposed immediately below a calcining furnace for calcining powdery raw materials. The scattering clinker particles from a fluidized-bed burning furnace are trapped in the lower vortex chamber and are returned to the fluidized-bed burning furnace so that the scattering clinker particles are positively prevented from flowing into the upper vortex chamber and the calcining furnace.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: July 26, 1988
    Assignees: Chichibu Cement Kabushiki Kaisha, Chichibu Engineering Kabushiki Kaisha, Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Toshikazu Ichiyanagi, Kanzaburo Suto, Tamotsu Negishi, Yasuo Komatsu, Shoji Sekine, Hiroshi Teshigawara, Satoru Higuchi, Masaharu Kikuchi, Hiroshi Yokomizo