Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7178366 | Method for the production of an internally vitrified SiO2 crucible | Fritz Schwertfeger, Jens Guenster, Juergen Heinrich | 2007-02-20 |
| 6827988 | Process and a device for producing ceramic molds | Tobias Krause, Jens Günster, Jurgen Heinrich | 2004-12-07 |