Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451988 | Naphthol derivatives | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 2002-09-17 |
| 6409812 | AZO compounds and process for producing the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 2002-06-25 |