Patents Assigned to E. MERCK, Patentabteilung
  • Penicillins and their preparation
    Patent number: 4119631
    Abstract: Carbamic acid lactones of the formula ##STR1## wherein Y is H or alkyl of 1-4 carbon atoms and R.sub.2 and R.sub.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: October 10, 1978
    Assignee: E. MERCK, Patentabteilung
    Inventors: Rudolf Gottschlich, Werner Rogalski, Rolf Bergmann, Rosmarie Steinigeweg, Helmut Wahlig