Patents by Inventor Takahiro Suekane

Takahiro Suekane 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).

  • Lipopolysaccharide and process for preparation thereof
    Patent number: 4746511
    Abstract: A lipopolysaccharide characterized by a polysaccharide portion composed of D-arabinose and D-mannose in a 1:3/4 ration and 37 to 47% of a fatty acid portion having 14-19 carbon atoms bonded to the polysaccharide through an ester linkage. This lipopolysaccharide has physiological activities such as antitumor activity, immunizing activity, cell juvenescent activity, phagocyte activating activity, and infection preventing activity.This lipopolysaccharide is prepared by culturing a Mycobacterium or a Propionibacterium and extracting the lipopolysaccharide from the culture with a non-ionic surface active agent and purifying the extract with a molecular sieve.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: May 24, 1988
    Assignees: Chisato Maruyama, Zeria Shinyaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Kobatake, Takahiro Suekane, Kazuhiro Kumagai, Osamu Ohya