Patents by Inventor Soon H. An

Soon H. An 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).

  • Cephalosporin compounds
    Patent number: 4971962
    Abstract: The present invention relates to novel cephalosporin compounds having high antimicrobial activity, which are shown by the formula(I), and to a process for preparing them ##STR1## wherein R.sup.1 is a hydrogen atom or an amino protecting group;R.sup.2 is acetoxy; andR.sup.3 is a hydrogen atom or a carboxyl protecting group (wherein when R.sup.2 contains quaternary ammonium, r.sup.2 and R.sup.3 may form a zwitter ion).The present invention also relates to the non-toxic and pharmaceutically acceptable salts of the cephalosporin compounds of the formula (I). Also described are compositions containing the antibiotics according to the present invention.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: November 20, 1990
    Assignee: Lucky, Ltd.
    Inventors: Hun S. Oh, Yong Z. Kim, Jae H. Yeo, Jong C. Lim, Won S. Kim, Soon H. An, Chan S. Bang, Hyeon J. Yim