Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888412 | Tanning assistant | Wolfgang Reuther, Rolf Fikentscher, Dietrich Lach, Rolf Streicher, Ortwin Schaffer | 1989-12-19 |
| 4886882 | Hydroxyoxaalkylmelamines | Wolfgang Reuther | 1989-12-12 |
| 4855427 | Epoxy resins obtained from reaction of epoxyalkyl halides and aromatic hydroxyl-containing melamines | Roland Peter, Thomas Allspach | 1989-08-08 |