Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6989406 | Polyurea polyrethanes having improved physical properties | Hans-Detlef Arntz, Klaus Brecht, Peter Seifert, Michael Schneider | 2006-01-24 |
| 6521676 | Use of polyether-polyurethane for safety clothing | Klaus Brecht, Hans-Detlef Arntz | 2003-02-18 |