Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892556 | Process for transfer printing on leather substrates impregnated with aminoplast pre-condensate | Elisabeth A. Schulzen, heir, Holger Schulzen, heir, Petra S. Schulzen, heir | 1990-01-09 |
| 4681034 | Process for printing a substrate by the hot-transfer printing method | Wolfgang Kohler, Kurt Schliessmann | 1987-07-21 |