Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795847 | Preparation of 2,6-dialkyl-naphthalenes | Jens Weitkamp, Wilhelm Holtmann, Gerd Collin, Hans Spengler | 1989-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795847 | Preparation of 2,6-dialkyl-naphthalenes | Jens Weitkamp, Wilhelm Holtmann, Gerd Collin, Hans Spengler | 1989-01-03 |