Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303502 | Method and article for the preventive protection of materials against soil-dwelling pests | Wolfgang Metzner, Michael Pallaske | 1994-04-19 |
| 5248450 | Composition for use an an agent or concentrate for the preservation of wood or wood materials | Wolfgang Metzner, Luzian Naczinski | 1993-09-28 |
| 5159778 | Method and article for the preventive protection of materials against soil-dwelling pests | Wolfgang Metzner, Michael Pallaske | 1992-11-03 |