Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6518396 | Method for influencing the optical properties of polymers | Michael Koehl | 2003-02-11 |
| 6509188 | Photobioreactor with improved supply of light by surface enlargement, wavelength shifter bars or light transport | Walter Trosch, Ulrike Schmid-Staiger, Armin Zastrow, Alexander Retze | 2003-01-21 |
| 5864994 | Glazing element, in particular for facing building facades | Wolfgang Graf, Andreas Georg, Volker Wittwer, Michael Koehl, Andreas Gombert +1 more | 1999-02-02 |