Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7322215 | Method for blank pressing of optical components | Ulrike Stoehr, Ralf Biertuempfel | 2008-01-29 |
| 7139133 | Optical lens soft-focus effect | Ralf Bonitz, Ralf Biertuempel, Matthias Redey | 2006-11-21 |
| 5922271 | Method for the manufacture of dense-sintered glass ceramic moldings | Janusz Zborowski, Wolfgang Pannhorst, Waldemar Weinberg, Klaus Mirsch, Michael Dunkl +3 more | 1999-07-13 |
| 5270270 | Process for producing dense-sintered cordierite bodies | Wolfgang Pannhorst | 1993-12-14 |