| 8372161 |
Method for the reactive coloring of leather |
Laszlo Somogyi, Andrea Zamponi, Harald Kiesow, Rainer Erhardt |
2013-02-12 |
| 5972050 |
Dye mixtures containing polyazo dyes and CI Sulphur Black 1 dye |
Matthias Wiesenfeldt, Johannes P. Dix, Manfred Herrmann, Gunther Lamm |
1999-10-26 |
| 5224963 |
Quaternized condensation products for aftertreating dyed leather |
Johannes P. Dix, Rolf Fikentscher, Ortwin Schaffer |
1993-07-06 |
| 4983185 |
Dyeing of leather with pigments |
Ortwin Schaffer, Horst Belde, Paul Guenthert |
1991-01-08 |
| 4936864 |
Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistants, their preparation and use in the tanning of leather |
Rolf Fikentscher, Dietrich Lach, Ortwin Schaffer, Alfred Oftring |
1990-06-26 |
| 4888412 |
Tanning assistant |
Klaus Ebel, Wolfgang Reuther, Rolf Fikentscher, Dietrich Lach, Ortwin Schaffer |
1989-12-19 |
| 4729768 |
Deliming of hides and use of cyclic esters of sulfurous acid as deliming agents |
Kurt Schneider, Dietrich Lach, Ortwin Schaffer |
1988-03-08 |
| 4675021 |
Amphoteric condensates and their use in retanning |
Dietrich Lach, Rainer Strickler |
1987-06-23 |
| 4596581 |
Carboxyl- and amino-containing copolymer for after-tanning mineral tanned leather |
Lothar Hohr, Dietrich Lach |
1986-06-24 |
| 4403993 |
Preparation of water-soluble or self-dispersing resin tanning agents |
Dietrich Lach, Gerhard Bolz |
1983-09-13 |
| 4377387 |
Deliming hides |
Erwin Hahn, Dietrich Lach, Kurt Schneider, Rainer Strickler |
1983-03-22 |
| 4322210 |
Auxiliary, and process, for the soaking of hides |
Erwin Hahn, Dietrich Lach |
1982-03-30 |
| 4272243 |
Dyeing of grain leather |
Dietrich Lach, Franz Feichtmayr |
1981-06-09 |
