Patents by Inventor Katsutoshi Yoshisato

Katsutoshi Yoshisato 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 for cultivation of hepatocytes
    Patent number: 6136600
    Abstract: The present invention provides a method for cultivation of hepatocytes efficiently by using a hepatocyte growth promoting factor derived from 3T3 cells, which comprises culturing hepatocytes isolated from the liver of a matured mammal in a medium containing pleiotrophin, fetal bovine serum, ascorbic acid or analogues thereof and nicotinamide or an analogue thereof, thereby forming primary colonies of the hepatocytes; and a method for subculture of the primary hepatocytes in the same medium.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: October 24, 2000
    Assignee: Japan Science and Technology Corporation
    Inventors: Hajime Sato, Katsutoshi Yoshisato