Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5342723 | Biscationic acid amide and acid imide derivatives as charge controllers | Hans-Tobias Macholdt, Siegfried Schiebler, Erwin Dietz | 1994-08-30 |
| 5329046 | Biscationic acid amide and imide derivatives and processes for their preparation | Hans-Tobias Macholdt, Siegfried Schiessler, Erwin Dietz | 1994-07-12 |