Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6467332 | Device for olfactory judgment of an odorous substance, use thereof and a method of operating the device | Louis Bertschi | 2002-10-22 |
| 6165451 | Cosmetic light screening composition | Alain Bringhen, Hans Ulrich Gonzenbach, Dominique Sidrac | 2000-12-26 |
| 6123929 | Light screening composition containing a polysiloxane-type UV-B screening agent and a benzimidazol-type screening agent | Hans Ulrich Gonzenbach, Ulrich Huber | 2000-09-26 |
| 5495039 | Organosilicon compounds | Georg Frater, Stephane F. M. Van Oycke | 1996-02-27 |
| 5403944 | Organosilicon compounds | Georg Frater, Stephane F. M. Van Oycke | 1995-04-04 |
| 4713473 | Process for treating 2-ethylhexyl p-methoxycinnamate in the presence of a phenol | Peter Schudel, Hans Ulrich Gonzenbach | 1987-12-15 |