Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419849 | Method for manufacturing piezoelectric material | Hong Qiu, Koji Sumi, Tsutomu Nishiwaki, Zhiqiang Wei | 2002-07-16 |
| 6402304 | Piezoelectric actuator, ink jet printing head, printer, method for manufacturing piezoelectric actuator, and method for manufacturing ink jet printing head | Hong Qiu, Koji Sumi, Masato Shimada, Tsutomu Nishiwaki, Zhi Quiang Wei | 2002-06-11 |