Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880571 | Process for the preparation of 5-nitro-1,4-naphthoquinone | Robert U. Osterwalder, Eric Plattner, Gottfried Seifert | 1989-11-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880571 | Process for the preparation of 5-nitro-1,4-naphthoquinone | Robert U. Osterwalder, Eric Plattner, Gottfried Seifert | 1989-11-14 |