Patents by Inventor Shinzi Ueda

Shinzi Ueda 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).

  • Dimethyl sulfoxide adducts of penicillins
    Patent number: 4244870
    Abstract: Sodium 6-[D(-)-.alpha.-(4-hydroxy-1,5-naphthyridine-3-carboxamido)phenylacetamido ]penicillanate or its hydroxylated derivative at the p-position of the phenyl group in a crude state can be purified efficiently through its dimethyl sulfoxide adduct.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: January 13, 1981
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Norihiko Tanno, Takashi Harimoto, Shinzi Ueda, Hisao Tobiki