Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804704 | Crosslinked organic resins containing SiO.sub.2 and sulphonic acid groups | Bernhard Schleppinghoff, Mathias Lux | 1989-02-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804704 | Crosslinked organic resins containing SiO.sub.2 and sulphonic acid groups | Bernhard Schleppinghoff, Mathias Lux | 1989-02-14 |