Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7217827 | Halogen-containing aromatic compound | Yasunori Okumura | 2007-05-15 |
| 6924348 | Polyamide acid and polyimide, and optical material | Kozo Tajiri, Yasunori Okumura, Tohru Matsuura, Noriyoshi Yamada | 2005-08-02 |
| 6916959 | Halogen-containing aromatic compound | Yasunori Okumura | 2005-07-12 |
| 5364409 | Endoscopic needle holder | Tomohiko Asahara, Noboru Ujiie, Nobuhiro Kagaminuma | 1994-11-15 |