Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4325890 | Phenol-formaldehyde condensates, their preparation and their use as dispersing agents, liquefaction agents and tanning agents | Gunther Reitz, Vaclav Kaspar, Kurt Schaupp | 1982-04-20 |