Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592757 | Production of dyed or undyed wool with an antifelting finish: quaternized piperazine condensate | Rolf Fikentscher, Heinrich Mertens | 1986-06-03 |
| 4592758 | After-treatment of dyed textile materials of natural polyamides or nylons with quaternized piperazine condensate | Rolf Fikentscher, Heinrich Mertens, Michele Vescia | 1986-06-03 |