Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857364 | Intumescent compositions and the use thereof | — | 1989-08-15 |
| 4833188 | Hydrophobic and oleophobic finishes | Wilfried Kortmann, Friedrich Reich | 1989-05-23 |
| 4831062 | Preparation of intumescent materials for coatings and building elements | — | 1989-05-16 |