Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6491930 | Stable cosmetic formulation containing butylmethoxydibenzoylmethane | Hansjurgen Driller, Sabine Hitzel, Dorothee Wille | 2002-12-10 |
| 6436374 | Light-stable cosmetic formulation containing butylmethoxydibenzoylmethane | Dorothee Wille, Sabine Hitzel | 2002-08-20 |
| 6399044 | Skin-coloring powder mixture | Sabine Hitzel, Roland Martin, Ralf Emmert | 2002-06-04 |
| 6306905 | Stable aqueous formulation of 3-(N-butylacetamino)-propionic acid ethyl ester | Sabine Hitzel, Dorothee Wille, Mohammad Jalalian | 2001-10-23 |
| 6187298 | Sunscreens having ultraspectral protection | Sabine Hitzel, Dorothee Wille | 2001-02-13 |
| 6146617 | Dispersion of inorganic UV filters | Dorothee Wille, Sabine Hitzel | 2000-11-14 |
| 5968482 | .alpha.-hydroxyketoalkyl derivatives as light protection filters | Roland Martin, Ingeborg Stein, Ulrich Heywang, Michael Schwarz | 1999-10-19 |
| 5718906 | Light-stable cosmetic composition | Roland Martin, Ralf Emmert, Gerd Bauer, Ulrich Heywang | 1998-02-17 |
| 5656262 | Skin-coloring powder mixture | Sabine Hitzel, Roland Martin, Ralf Emmert | 1997-08-12 |
| 5600007 | Use of .alpha.-hydroxyketoalkyl derivatives as light protection filters | Roland Martin, Ingeborg Stein, Ulrich Heywang, Michael Schwarz | 1997-02-04 |
| 5569460 | Skin-coloring preparation | Sieglinde Stossel, Andrea Spiller | 1996-10-29 |