Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6441191 | Dyestuffs containing indolenecyanine disulphonic acid derivatives | Lutz Lehmann | 2002-08-27 |
| 6261753 | Use of indolenine-cyaninedisulphonic acid derivatives | Lutz Lehmann | 2001-07-17 |
| 5747233 | Use of indoleine-cyaninedisulphonic acid derivatives | Lutz Lehmann | 1998-05-05 |