Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6398978 | Piezoelectric ceramic | Masakazu Hirose, Hitoshi Oka | 2002-06-04 |
| 6391814 | Piezoelectric ceramic and piezoelectric device using same | Taeko Tsubokura, Takeshi Nomura | 2002-05-21 |