Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889655 | Mixtures of fluorescent whitening agents | Klaus Artz, Kurt Weber, Kurt Burdeska, Dieter Reinehr | 1989-12-26 |
| 4830763 | Process for increasing the degree of whiteness of polyester-containing textile material | Urs Lehmann, Dieter Reinehr, Jurgen Kaschig | 1989-05-16 |