Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6730795 | Process for the preparation of phenylene-bis-benzimidazole-tetrasulfonic acid disodium salt | Ralf Bertram, Stephan Hillers, Oskar Koch, Harry Erfurt | 2004-05-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6730795 | Process for the preparation of phenylene-bis-benzimidazole-tetrasulfonic acid disodium salt | Ralf Bertram, Stephan Hillers, Oskar Koch, Harry Erfurt | 2004-05-04 |