Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674531 | Nanoparticles containing an active substance and a ketalized polytartramidic acid, process for their preparation, and use thereof | Axel Walch, Gerhard Seipke, Gregory John Russell-Jones | 1997-10-07 |
| 5631326 | Crosslinked nitrogen-containing vinyl copolymers processes for their preparation and the use of these compounds | Heiner Glombik, Stefan M ullner, Axel Walch | 1997-05-20 |