Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7091261 | Yellow hue compound and aqueous ink for ink-jet recording system using the same | Yoriaki Matsuzaki, Ryu Oi, Osamu Kohgo | 2006-08-15 |
| 6800674 | Anthraquinone compound and water-based ink-jet recording ink containing the compound | Osamu Kohgo, Yoriaki Matsuzaki, Ryu Oi | 2004-10-05 |
| 6570025 | Sulfur compound and use thereof | Kenichi Fujii, Atsuo Otsuji, Masao Imai, Kenichi Sugimoto, Rihoko Suzuki +1 more | 2003-05-27 |
| 6407242 | Quinoline derivative and use of same | Hideki Ikuta, Tatsuya Nagayoshi, Akira Ogiso, Hisato Ito | 2002-06-18 |
| 6132640 | Quinoline derivative and use of same | Hideki Ikuta, Tatsuya Nagayoshi, Akira Ogiso, Hisato Ito | 2000-10-17 |