Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7740696 | Water-soluble azo compound, ink composition, and colored article | Yoshiyuki Dejima, Yasuo Shirasaki | 2010-06-22 |
| 6540925 | Oil recovery method and oil recovery apparatus | Katsuyuki Maida, Hiroshi Saeki | 2003-04-01 |