Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5409918 | Crystalline cephem acid addition salts and process for their preparation | Walter Durckheimer, Burkhard Mencke, Dieter Isert | 1995-04-25 |
| RE34865 | Cephalosporin derivatives | Jurgen Blumbach, Walter Durckheimer, Gerd Fischer, Burghard Mencke, Dieter Isert +1 more | 1995-02-21 |
| 5306717 | Cephalosporin derivatives | Walter Durckheimer, Gerd Fischer, Burkhard Mencke, Gerhard Seibert, Dieter Isert +1 more | 1994-04-26 |
| 5100887 | Cephalosporin derivatives | Jurgen Blumbach, Walter Durckheimer, Gerd Fischer, Burghard Mencke, Dieter Isert +1 more | 1992-03-31 |
| 5091382 | Cephalosporin derivatives | Walter Durckheimer, Karl-Heinz Scheunemann, Dieter Isert, Gerhard Seibert | 1992-02-25 |