Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828026 | Hollow balls and a method for producing hollow balls and for producing light-weight structural components by means of hollow balls | Frank Bretschneider, Herbert Stephan, Juergen Brueckner, Guenter Stephani, Ulf Waag +2 more | 2004-12-07 |
| 6747180 | Metal catalysts | Daniel Ostgard, Peter Panster, Claus Rehren, Monika Berweiler, Gunter Stephani | 2004-06-08 |