Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352241 | Process for retanning mineral tanned leathers with aromatic sulphonic acids | Franz Schade, Wilhelm Krummel, Henricus Slaats | 1994-10-04 |
| 5340365 | Process for producing chrome leather | Franz Schade, Joachim Kochta, Herbert Burkhardt, Peter Schindlmayr | 1994-08-23 |