Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4656119 | Method of manufacturing X-ray resist | Frithjof Asmussen, Winfried Wunderlich | 1987-04-07 |
| 4647696 | Method for making isobutyric acid | Siegmund Besecke, Guenter Schroeder, Hermann Siegert | 1987-03-03 |
| 4576971 | Flame-retarded polyacrylamide or polymethacrylimide synthetic resin foam | Ehrenfried Baumgartner, Siegmund Besecke | 1986-03-18 |
| 4452999 | Method for making isobutyric acid | Siegmund Besecke, Guenter Schroeder, Hermann Siegert | 1984-06-05 |
| 4228102 | Preparation of carboxylic acid amides | Siegmund Besecke, Guenter Schroeder | 1980-10-14 |