Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11312652 | Transparent, dyed cook top or hob with improved colored display capability and a method for the manufacturing of such a cook top or hob | Friedrich Siebers, Ulrich Schiffner, Wolfgang Schmidbauer | 2022-04-26 |
| 10562807 | Transparent, dyed cook top or hob with improved colored display capability and a method for the manufacturing of such a cook top or hob | Friedrich Siebers, Ulrich Schiffner, Wolfgang Schmidbauer | 2020-02-18 |
| 9676643 | Method for producing glasses, glass ceramics and the use of same | Frank-Thomas Lentes, Karin Naumann, Ulrich Schiffner, Friedrich Siebers, Christian MUELLER +1 more | 2017-06-13 |
| 9446982 | Transparent or transparent colored lithium aluminum silicate glass ceramic articles having adapted thermal expansion and use thereof | Friedrich Siebers, Evelin Weiss | 2016-09-20 |
| 9296645 | Transparent low-color lithium aluminum silicate glass ceramic and the use thereof | Friedrich Siebers, Evelin Weiss, Ulrich Schiffner, Falk Gabel | 2016-03-29 |
| 9199872 | Method of environmentally friendly melting and refining of a glass melt for a crystallizable glass of a lithium aluminium silicate (LAS) glass ceramic | Friedrich Siebers, Ioannis Kosmas, Matthias Stubenrauch, Horst Blei, Reiner Best +2 more | 2015-12-01 |
| 8615984 | Device for the distribution of flowable additives in exhaust gas systems | Heinz Kornherr, Michael Mueller, Bernhard Aichhorn, Gert Barnstedt, Hans-Juergen Bruene | 2013-12-31 |
| 8607550 | System for admixing a reducing agent to an exhaust gas flow of an internal-combustion engine | Ruediger Tangemann, Karl Mayr | 2013-12-17 |
| 6821628 | Glass-ceramic cooking panel that makes deposited material, such as dirt, less conspicuous | Bernd Schultheis, Waldemar Weinberg, Monica Cotlear De Witzmann, Roland Dudek, Friedrich Siebers | 2004-11-23 |