Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6749738 | Electrochemical method for forming an inorganic covering layer on a surface of a copper material | Alberto Billi, Stephan Hoveling | 2004-06-15 |
| 6576123 | Arrangement for removing heavy metal ions from roof runoff waters | Sonja Priggemeyer, Werner Harnischmacher, Herbert Runde, Gerhard Weil | 2003-06-10 |
| 6248233 | Arrangement for removing heavy metal ions from roof runoff waters | Sonja Priggemeyer, Werner Harnischmacher, Herbert Runde, Gerhard Weil | 2001-06-19 |
| 6176905 | Process and reaction solution for producing a patina | Sonja Priggemeyer, Stefan Hoveling | 2001-01-23 |
| 5962116 | Copper strip or sheet with a brown cover layer and methods for its production | Christian Triquet, Wolfgang Denke, Stefan Hoveling | 1999-10-05 |
| 5879745 | Method for stabilizing a patina layer | Ulrich Reiter, Stefan Hoveling | 1999-03-09 |