Patents by Inventor Tsutomu Hirobe

Tsutomu Hirobe 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).

  • Patent number: 5975309
    Abstract: A fluidized-bed classifier has a vessel defining a space divided into an upper fluidized-bed chamber and a lower gas chamber by a perforated dispersion plate having the shape of a funnel. Rising currents of a gas, such as air, are blown through the dispersion plate into the upper fluidized-bed chamber to produce a fluidized bed of a particulate material over the dispersion plate. The lower gas chamber is divided into a first gas chamber and a second gas chamber by a partition plate. The gas is supplied into the first air chamber so that rising gas currents of a velocity necessary for fluidizing coarse particles contained in the particulate material fed into the vessel are blown from the first air chamber through the dispersion plate into the fluidized-bed chamber.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: November 2, 1999
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Taiheiyo Cement Corporation
    Inventors: Yoshihiro Mitsuda, Seisuke Sawamura, Ryuichi Okamura, Hiroshi Ueda, Fuminori Ando, Kanzaburo Sutoh, Mitsuaki Murata, Tsutomu Hirobe