Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021160 | Strongly acidic microporous membranes for cation exchange | — | 1991-06-04 |
| 4944812 | Tannin mannich adducts for improving corrosion resistance of metals | Andreas Lindert | 1990-07-31 |
| 4331715 | Process for improving the corrosion resistance of conversion coated parts | — | 1982-05-25 |