Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9108336 | Wood treating agent and method of treating wood or wood based materials or the like | Peter Jüngel, Sascha Hellkamp | 2015-08-18 |
| 6248159 | Wood preservative | Heinrich Poppen | 2001-06-19 |
| 6123756 | Wood-protecting agent | Heinrich Poppen | 2000-09-26 |
| 5303502 | Method and article for the preventive protection of materials against soil-dwelling pests | Wolfgang Metzner, Hans-Werner Wegen | 1994-04-19 |
| 5159778 | Method and article for the preventive protection of materials against soil-dwelling pests | Wolfgang Metzner, Hans-Werner Wegen | 1992-11-03 |
| 4941356 | Process for detecting insects | — | 1990-07-17 |