Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6576123 | Arrangement for removing heavy metal ions from roof runoff waters | Stefan Priggemeyer, Werner Harnischmacher, Herbert Runde, Gerhard Weil | 2003-06-10 |
| 6248233 | Arrangement for removing heavy metal ions from roof runoff waters | Stefan Priggemeyer, Werner Harnischmacher, Herbert Runde, Gerhard Weil | 2001-06-19 |
| 6176905 | Process and reaction solution for producing a patina | Stefan Priggemeyer, Stefan Hoveling | 2001-01-23 |