Patents Assigned to Cheil Jedang Co.
  • Process for preparing cephem derivative
    Patent number: 5700932
    Abstract: The present invention relates to a process for preparing a cephem derivative represented by the following formula (I): ##STR1## useful as an intermediate for the preparation of antibiotics.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: December 23, 1997
    Assignee: Cheil Jedang Co.
    Inventors: Kwang Hyuk Lee, Seung Sub Choi, Myeong Sik Yoon