Patents by Inventor Michiyuki Takashiki

Michiyuki Takashiki 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).

  • Method of culturing animal cells
    Patent number: 5250432
    Abstract: A method of culturing animal cells, which comprises (A) subjecting living animal cells to suspension culture in a culture tank, (B) withdrawing a portion of a suspension culture fluid containing the living animal cells from the culture tank, (C) supplying the withdrawn suspension culture fluid to a centrifugal separating device which is operated under specific conditions and separating the living animal cells from the suspension culture fluid, (D) withdrawing the separated living animal cells from the centrifugal separating device, and (E) recycling at least a portion of the withdrawn living animal cells to the culture tank for the step (A).
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: October 5, 1993
    Assignee: Teijin Limited
    Inventors: Michiyuki Takashiki, Kimihiko Hamamoto, Kenji Ishimaru