Patents by Inventor Masaaki Hibi

Masaaki Hibi 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).

  • Process for producing taxol by cell culture of taxus species
    Patent number: 5312740
    Abstract: A callus and suspension culture cells containing taxol as an effective component, and a process for producing taxol therefrom, are provided. The callus and suspension culture cells containing taxol in a high content can be induced and proliferated by culturing a tissue of a plant belonging to the genus Taxus, particularly its female gametophyte. The process for cell culture is advantageously carried out in the presence of a particular combination of plant growth regulators known per se in a growth medium. A callus or suspension culture cells containing at least taxol as an effective component can be stably provided, making it possible to effectively produce taxol.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: May 17, 1994
    Assignee: Nippon Steel Corporation
    Inventors: Koji Saito, Hiroaki Ohashi, Masaaki Hibi, Makoto Tahara