Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889655 | Mixtures of fluorescent whitening agents | Heinz Hefti, Klaus Artz, Kurt Burdeska, Dieter Reinehr | 1989-12-26 |
| 4867906 | Mixtures of fluorescent whitening agents | Leonardo Guglielmetti, Hans R. Meyer, Dieter Reinehr | 1989-09-19 |
| 4847404 | Stilbene derivatives by desulfonation | Kurt Burdeska, Dieter Reinehr | 1989-07-11 |
| 4838777 | Extrusion equipment for coating wire | — | 1989-06-13 |