Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5028736 | Process for the separation and recovery of naphthalene-sulfonic acids from aqueous solutions | Ulrich Girrbach, Siegbert Rittner, Siegfried Bildstein | 1991-07-02 |
| 4756025 | Method and device for data transmission over several parallel lines, in particular optical fibers | Dieter Munz, Gerhard Rumold | 1988-07-05 |
| 4350800 | Process for the preparation of synthetic resins based on resorcinol compounds | Wolfgang Hesse, Franz Landauer | 1982-09-21 |