Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679678 | Thienithiazine derivatives | Josef Weinberger, Michael Pyerin | 1997-10-21 |
| 5614011 | Thermally split zirconium silicate, method of its production and use | Peter Kleinschmit, Klaus Zetzmann, Hans Hoffmeister | 1997-03-25 |