Patents by Inventor Yoshito Kaziro

Yoshito Kaziro 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).

  • DNA fragment and expression plasmid containing the DNA fragment
    Patent number: 5225348
    Abstract: A DNA fragment containing a promoter region for human polypeptide chain elongation factor-1.alpha., its base sequence and expression plasmids containing the DNA fragment having high applicability to a wide range of host cells with high expression capacity. These expression plasmids can be maintained stably for at least one month in mammalian host cells. Such features of the expression plasmids may render possible the efficient production of various kinds of useful physiologically active substances for a long period using wide range of mammalian cells as the host.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: July 6, 1993
    Assignee: Mochida Pharmaceutical Co., Ltd.
    Inventors: Shigekazu Nagata, Sumio Sugano, Dong W. Kim, Taichi Uetsuki, Yoshito Kaziro