Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695686 | Brightener mixtures based on bisstyryl compounds | Manfred Hauptreif, Karl-Heinz Etzbach, Helmut Reichelt, Peter Raatz, Manfred Herrmann | 1997-12-09 |
NL
Norbert Leppert
Overall (1997): #98,103 of 185,788Top 55%
1
Patents 1997