Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840749 | Process for production of 1-aminoanthraquinone | Noriaki Ikeda, Noboru Sugishima, Yasushi Fujii, Shinji Ikuta, Akira Inoue | 1989-06-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840749 | Process for production of 1-aminoanthraquinone | Noriaki Ikeda, Noboru Sugishima, Yasushi Fujii, Shinji Ikuta, Akira Inoue | 1989-06-20 |