Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34986 | Tanning agent formulation for manufacture of semifinished leather products | Paul Rathfelder, Friedrich Landbeck, Jozef Sagala | 1995-07-04 |
| 5011499 | Tanning agent formulation for manufacture of semifinished leather products | Paul Rathfelder, Jozef Sagala, Friedrich Landbeck | 1991-04-30 |
| 4470825 | Process for the fat-liquoring of leathers and skins | Fritz Landbeck, Paul Rathfelder, Rolf Leberfinger | 1984-09-11 |