Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9808954 | Composition of a timber formulation comprising Cu salts and organic cyclic ingredients for the preservation of timber for decks | Helmut Hartner, Stefan Schmitt | 2017-11-07 |
| 6506795 | Wood preservatives | Volker Barth, Helmut Hartner | 2003-01-14 |
| 4801404 | Boric acid compositions | Wolf Dietrich, Eberhard Giebeler | 1989-01-31 |