Patents by Inventor Sinji Ueda

Sinji 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).

  • Cephem compounds
    Patent number: 4705784
    Abstract: A cephem compound represent by the general formula ##STR1## wherein, R.sup.1 represents hydrogen or lower alkyl, R.sup.2 and R.sup.3 are the same or different and each represents hydrogen or lower alkyl, R.sup.4 represents carboxyl or esterified carboxyl, and n represents 0 or 1, a salt of the cephem compound, and a process for producing the cephem compound or a salt thereof. Compounds of the above formula and salts thereof are valuable as antibacterial agents and are especially useful as oral drugs in the prevention or treatment of bacterial infectious diseases.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: November 10, 1987
    Assignee: Sumitomo Pharmaceuticals Company, Limited
    Inventors: Hirotada Yamada, Naruhito Masai, Sinji Ueda, Takao Okuda, Masatomo Fukasawa, Masuhiro Kato, Masataka Fukumura