Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6443170 | Cleaning apparatus for removing residues | Frans Vansant, Dieter Köffer, Gerhard Theis, Winfried Terjung | 2002-09-03 |
| 6265625 | Isolation of glycols | Frans Vansant, Dieter Köffer, Gerhard Theis, Winfried Terjung | 2001-07-24 |