Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4486314 | Process for the handling of waste waters | Edgar Koppelmann, Klaus Schumann, Heinz Smolka | 1984-12-04 |
| 4403059 | Storage-stable aqueous alkali metal silicate/filler adhesive compositions and their use | Bernhard Laut, Wolfgang Friedemann | 1983-09-06 |