Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7462228 | Water-base black ink composition and colored product | Hiroaki Ohno, Toru Yamaguchi, Takahiko Matsui, Takashi Yoneda, Yoshiaki Kawaida +1 more | 2008-12-09 |
| 6409810 | Water-soluble trisazo compounds, aqueous ink composition and colored article | Hiroaki Ono, Takashi Miyazawa, Toru Tabei, Yasuo Shirasaki, Isao Yamaguchi | 2002-06-25 |