Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34986 | Tanning agent formulation for manufacture of semifinished leather products | Paul Rathfelder, Heinz Matschkal, Jozef Sagala | 1995-07-04 |
| 5011499 | Tanning agent formulation for manufacture of semifinished leather products | Paul Rathfelder, Jozef Sagala, Heinz Matschkal | 1991-04-30 |