Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5965730 | Pyridine derivatives | Tatsuzo Ukita, Masakatsu Sugahara, Katsuo Ikezawa, Kazuaki Naito | 1999-10-12 |
| 5342941 | Naphthalene derivatives, processes for preparing the same, and synthetic intermediates therefor | Tameo Iwasaki, Kazuhiko Kondo, Katsuo Ikezawa, Shinsuke Yamagata | 1994-08-30 |