Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10358371 | Apparatus and method for producing glass products from a glass melt while avoiding bubble formation | Olaf Claussen, Thomas Pfeiffer, Günter Weidmann, Reinhard Wurm | 2019-07-23 |
| 9247586 | Unit for conductively heatable melting | Johann Weber, Franz Ott, Robert C. Ruhl | 2016-01-26 |
| 8171752 | Device for electrically grounding a float glass production apparatus | Thomas Pfeiffer, Gernot Roeth, Olaf Claussen, Knut Jakobi, Andreas Roters +1 more | 2012-05-08 |
| 7231788 | Method and device for refining a glass melt using negative pressure | Frank Karetta, Joerg Witte, Dirk Gohlke, Wolfgang Muench, Allen Jakway +2 more | 2007-06-19 |
| 7107794 | Suction feeder | Michael M. Beck, Frank-Jurgen Druschke, Ludwig Duersch, Johannes Roettgers, Anton Winkelmann | 2006-09-19 |
| 7040122 | Process for production of molten glass | Stefan Schmitt, Rule Kirchhoff, Wilfried Linz, Norbert Osterhage, Gerhard Lautenschlager +4 more | 2006-05-09 |
| 7021082 | Method and apparatus for suppressing oxygen bubble formation in glass melts | Patrick Hoyer, Gernot Roeth, Fritz Kraemer, Thomas Pfeiffer, Franzo Ott | 2006-04-04 |
| 6769272 | Method and apparatus for oxygen refinement of a glass melt | Gernot Roeth, Thomas Pfeiffer | 2004-08-03 |
| 6735237 | Device for producing a glass melt | Frank Karetta, Franz Ott, Siegfried Breitfelder | 2004-05-11 |