Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454959 | Piezoelectric ceramic material, sintered piezoelectric ceramic compact, and piezoelectric ceramic device | Isamu Yoshizawa | 2002-09-24 |
| 6383408 | Piezoelectric ceramic and surface wave device using the same | Koji Matsubara | 2002-05-07 |