Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6787214 | Fire-inhibiting flat element comprising at least two transparent fire-resisting glass plates | Jan Strejcek, Simon Frommelt, Klaus Wildenhain | 2004-09-07 |
| 5676722 | Method for producing flat or arcuate glass plates | Chrisoph Schmalt | 1997-10-14 |
| 5565273 | Transparent heat protection element | Walter Egli, Simon Frommelt, Christoph Giesbrecht | 1996-10-15 |
| 4937054 | Method of regenerating ZrF.sub.4 pickling solutions | Wolfgang Fennemann, Erich Minzl | 1990-06-26 |
| 4419216 | Process of recovering oil from oil-containing materials | Norbert Magedanz, Hans-Jurgen Weiss | 1983-12-06 |
| 4388174 | Process of recovering oil from oil-containing minerals | Norbert Magedanz, Hans-Jurgen Weiss | 1983-06-14 |