Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6443170 | Cleaning apparatus for removing residues | Jozef de Hert, Dieter Köffer, Gerhard Theis, Winfried Terjung | 2002-09-03 |
| 6397599 | Method for producing ethylene oxide by directly oxidizing ethylene with air or oxygen | Gerhard Theis | 2002-06-04 |