Patents by Inventor Mineo Ishizaka

Mineo Ishizaka 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).

  • Granular material processing apparatus with seal for stirrer shaft or the like formed by the granular material
    Patent number: 4509568
    Abstract: A granular material processing apparatus provided with an improved sealing arrangement for the granular material, which is so arranged that, instead of employing an ordinary packing member conventionally used for a known sealing arrangement, a packing portion is formed by the granular material itself present in the processing apparatus for tightly closing the gaps or clearances between stationary container members and movable processing members, thereby to completely eliminate troubles, spilling of the granular material and mixing of foreign matters into the granular material arising from abrasion or deterioration of a packing member, if such packing member should be employed.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: April 9, 1985
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Toshihiro Kawaguchi, Mineo Ishizaka, Hiyoshi Doi