Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931065 | Aftertreatment of reactive dyeings on cellulose fibers | Ulrich Baumgarte, Rolf Fikentscher, Sigismund Heimann, Siegfried Schneider, Michele Vescia | 1990-06-05 |
| 4704132 | After-treatment of dyeings with reactive dyes on cellulose fiber materials | Rolf Fikentscher, Sigismund Heimann, Siegfried Schneider, Michele Vescia | 1987-11-03 |
| 4592757 | Production of dyed or undyed wool with an antifelting finish: quaternized piperazine condensate | Rolf Fikentscher, Klaus Reincke | 1986-06-03 |
| 4592758 | After-treatment of dyed textile materials of natural polyamides or nylons with quaternized piperazine condensate | Rolf Fikentscher, Klaus Reincke, Michele Vescia | 1986-06-03 |
| 4488879 | Process for dyeing textile materials of polyacrylonitrile: quaternized piperazine copolymer as basic dye retarder | Rolf Fikentscher, Herbert Fleischer, Sigismund Heimann | 1984-12-18 |