Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4544372 | Process for improving the light fastness of polyamide dyeings | Klaus-Peter Heise, Robert Kuth, Karl Neufang, Karlfried Wedemeyer | 1985-10-01 |
| 4383835 | Process for improving the light fastness of polyamide dyeings with copper complexes of schiff bases or ortho-hydroxy benzophenone | Reinhard Preuss, Joachim Grutze, Ulrich Beck, Karl Vogel | 1983-05-17 |