Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11440847 | Method for producing a porous sintered magnesia, backfill for producing a heavy-clay refractory product with a granulation from the sintered magnesia, product of this type, and method for the production thereof, lining of an industrial furnace and industrial furnace | Robert Plummer, Carsten Vellmer, Holger Wirsing | 2022-09-13 |
| 9382161 | Process using non-fired refractory products as a lining of large-volume industrial furnaces and industrial furnaces lined with the non-fired refractory products | Bernd Scheubel, Helge Jansen, Rolf-Dieter Kizio, Holger Wirsing | 2016-07-05 |
| 8030236 | Fire-resistant ordinary ceramic batch, and fire-resistant product therefrom | Carsten Vellmer, Holger Wirsing | 2011-10-04 |
| 6887810 | Synthetic, refractory material for refractory products, and process for producing the product | Peter Bartha, Holger Wirsing, Guido Weibel | 2005-05-03 |
| 6753283 | Synthetic, refractory material for refractory products, and process for producing the product | Peter Bartha, Holger Wirsing, Guido Weibel | 2004-06-22 |
| 6740612 | Resistor for refractory shaped bodies, and shaped bodies derived therefrom | Peter Bartha, Holger Wirsing, Guido Weibel | 2004-05-25 |