Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812589 | Polyhydroxyl compounds containing a sulfonic acid ester group | Walter Uerdingen, Heinrich Heine, Dieter Freitag | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812589 | Polyhydroxyl compounds containing a sulfonic acid ester group | Walter Uerdingen, Heinrich Heine, Dieter Freitag | 1989-03-14 |