Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8869561 | Method and a device for the refining of glass | Wolfgang Schmid-Bauer, Hilgegard Römer, Günter Weidmann, Werner Kiefer | 2014-10-28 |
| 8424342 | Melting and refining in tanks with cooled walls | Werner Kiefer, Hildegard Römer, Frank-Thomas Lentes, Guido Räke, Volker Ohmstede +4 more | 2013-04-23 |
| 7981823 | Transparent glass ceramic plate that has an opaque, colored bottom coating over the entire surface or over part of the surface | Friedrich Siebers, Ulrich Schiffner, Wolfgang Schmidbauer, Klaus Schönberger, Petra Grewer | 2011-07-19 |
| 7694533 | Method for the refining of glass | Wolfgang Schmid-Bauer, Hilgegard Römer, Günter Weidmann, Werner Kiefer | 2010-04-13 |
| 7056848 | Nonporous keatite glass ceramic support plate for transporting products during heat treatment, method of making same and method of transporting products therewith | Otmar Becker, Bernd Ruedinger, Gerhard Hahn, Michael Bug, Andreas Schminke +4 more | 2006-06-06 |
| 6930289 | Cooking stove and method for production and components thereof | Friedrich Siebers, Peter Nass | 2005-08-16 |
| 6883350 | Debiteuse made of ceramic for plate glass production | Wolfgang Muench, Carsten Weinhold, Rudolf Singer | 2005-04-26 |
| 6698244 | Method for refining molten glass | Hildegard Römer, Werner Kiefer, Detlef Köpsel, Peter Nass, Uwe Kolberg +1 more | 2004-03-02 |
| 6515263 | COOKING STOVE HAVING A SMOOTH-TOP GLASS CERAMIC COOKTOP, AND A SMOOTH-TOP GLASS CERAMIC COOKTOP WITH A GLASS CERAMIC COOKTOP COOKING SURFACE, METHOD FOR PRODUCTION OF STOVES WITH SMOOTH-TOP GLASS CERAMIC COOKTOPS AND SMOOTH-TOP GLASS CERAMIC COOKTOPS | Ina Mitra, Friedrich Siebers, Otmar Becker, Andreas Schminke, Bernd Rüdinger +4 more | 2003-02-04 |
| 6360653 | Hardened glass or glass-ceramic cooking vessel formed as a wok, and method of making same | Helga Goetz, Stefan Hubert, Evelin Weiss, Patrik Schober, Horst Schillert | 2002-03-26 |
| 5723220 | Removal of halos from glass-ceramic articles decorated with a ceramic color | Roland Leroux, Kurt Schaupert, Jurgen Thurk, Waldemar Weinberg | 1998-03-03 |
| 5633090 | Lead-and cadmium-free glass composition for glazing, enameling and decorating glass | Werner Kiefer, Friedrich Siebers | 1997-05-27 |
| 5500255 | Removal of halos from glass-ceramic articles decorated with a ceramic color | Roland Leroux, Kurt Schaupert, Jurgen Thurk, Waldemar Weinberg | 1996-03-19 |
| 5409742 | Method for melting and/or burning-in of at least one layer | Nanning Joerg Arfsten, Klaus Kristen, Herwig Scheidler, Waldemar Weinberg | 1995-04-25 |
| 5212122 | Transparent colored glass ceramic with good thermal stability and variable transmission in the IR region | Wolfgang Pannhorst, Herwig Scheidler | 1993-05-18 |
| 5127931 | Process for ion exchange on glass or glass ceramic | Werner Kiefer | 1992-07-07 |