Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7931696 | Cationic dyes | Victor Paul Eliu, Beate Fröhling | 2011-04-26 |
| 7811335 | Styryl sulfide dyes | Victor Paul Eliu, Beate Fröhling | 2010-10-12 |
| 7806940 | Cationic oligomeric azo dyes | Victor Paul Eliu, Beate Fröhling | 2010-10-05 |
| 7803197 | Thiol derivative dyes | Victor Paul Eliu, Beate Fröhling | 2010-09-28 |
| 7785375 | Pyrido thiazinium dyes | Victor Paul Eliu, Beate Fröhling | 2010-08-31 |
| 7771490 | Dyes containing a thiol group | Victor Paul Eliu, Beate Fröhling | 2010-08-10 |
| 7704284 | Xanthene dyes | Victor Paul Eliu, Beate Fröhling | 2010-04-27 |
| 7482438 | Cationic imidazolazo dyes containing a 2,5-diaminophenyl moiety | Victor Paul Eliu, Thomas Sauder, Beate Fröhling | 2009-01-27 |
| 7476260 | Disulfide dyes, composition comprising them and method of dyeing hair | Victor Paul Eliu, Beate Fröhling | 2009-01-13 |
| 7223295 | Method of coloring porous material | Victor Paul Eliu, Beate Fröhling | 2007-05-29 |