Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5821376 | Process for the preparation of a dop-containing mixture | Horst Rieckert, Jörg Dietrich | 1998-10-13 |
| RE34986 | Tanning agent formulation for manufacture of semifinished leather products | Friedrich Landbeck, Heinz Matschkal, Jozef Sagala | 1995-07-04 |
| 5011499 | Tanning agent formulation for manufacture of semifinished leather products | Jozef Sagala, Friedrich Landbeck, Heinz Matschkal | 1991-04-30 |
| 4470825 | Process for the fat-liquoring of leathers and skins | Fritz Landbeck, Heinz Matschkal, Rolf Leberfinger | 1984-09-11 |
| 4335003 | Preparation agent for the production of synthetic filaments | Christlieb Nordschild, Horst Rieckert, Dieter Wolber | 1982-06-15 |