Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336155 | Mixtures of optical brighteners | Thomas Martini, Rudiger Erckel, Gunter Rosch, Heinz Probst | 1982-06-22 |
| 4330427 | Mixtures of optical brighteners | Thomas Martini, Rudiger Erckel, Gunter Rosch, Heinz Probst | 1982-05-18 |