Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6825143 | Method of making lead zirconate titanate-based ceramic powder, piezoelectric ceramic and method for making same, and piezoelectric ceramic element | Kenichi Nada, Masataka Kida | 2004-11-30 |
| 6774769 | Vibrating alert device | — | 2004-08-10 |