Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458287 | Piezoelectric ceramic composition and piezoelectric element containing the same | Keiichi Takahashi, Kojiro Okuyama, Hiroshi Sogou, Junichi Kato | 2002-10-01 |
| 6426017 | Piezoelectric ceramic composition and piezoelectric element using the same | Keiichi Takahashi, Hiroshi Sogou | 2002-07-30 |
| 6426018 | Piezoelectric ceramic compositions | Keiichi Takahashi | 2002-07-30 |