Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6951048 | Method for producing a stacked piezoelectric element | Yutaka Maruyama, Nobuyuki Kojima, Toru Ezaki | 2005-10-04 |
| 6668437 | Method for producing a stacked piezoelectric element | Yutaka Maruyama, Nobuyuki Kojima, Toru Ezaki | 2003-12-30 |
| 6342752 | Piezoelectric transformer element and method of mounting it in a housing | Masako Kataoka, Takeshi Fujimura, Katsuyuki Ishikawa, Keizo Tsukamoto | 2002-01-29 |
| 6291932 | Stacked piezoelectric element and producing method therefor | Yutaka Maruyama, Nobuyuki Kojima, Toru Ezaki | 2001-09-18 |
| 6172447 | Piezoelectric transformer device | Katsuyuki Ishikawa, Takeshi Fujimura, Masaaki Toyama, Masako Kataoka, Toru Ezaki +1 more | 2001-01-09 |
| 6114798 | Stacked element and vibration drive device | Yutaka Maruyama, Nobuyuki Kojima, Toru Ezaki | 2000-09-05 |
| 5770916 | Laminated piezoelectric element and vibration wave actuator | Toru Ezaki, Yutaka Maruyama, Nobuyuki Kojima | 1998-06-23 |