Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626633 | Bulk dyeing of plastics | — | 1997-05-06 |
| 5621027 | Dyestuffs for bulk dyeing plastics | Volker Hederich, Stephan Michaelis, Friedrich W. Krock | 1997-04-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626633 | Bulk dyeing of plastics | — | 1997-05-06 |
| 5621027 | Dyestuffs for bulk dyeing plastics | Volker Hederich, Stephan Michaelis, Friedrich W. Krock | 1997-04-15 |