Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873033 | Process for the production of hyperfiltration membranes | Klaus Heckmann, Georg Manecke, Klaus Ring, Helmut Ringsdorf | 1989-10-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873033 | Process for the production of hyperfiltration membranes | Klaus Heckmann, Georg Manecke, Klaus Ring, Helmut Ringsdorf | 1989-10-10 |