Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4906446 | Filler for dental materials and dental materials containing the same | Jurgen Engelbrecht, Michael Gunther | 1990-03-06 |
| 4806381 | Polymerizable compounds containing acid and acid derivatives, mixtures containing the same, and use thereof | Jurgen Engelbrecht, Michael Gunther | 1989-02-21 |