Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7355326 | Piezoelectric transformer | Takeshi Fujimura | 2008-04-08 |
| 6882090 | Piezoelectric transformer and strobe apparatus having the piezoelectric transformer | Takeshi Fujimura, Katsuyuki Ishikawa | 2005-04-19 |
| 6873086 | Piezoelectric transformer and strobe apparatus having the piezoelectric transformer | Takeshi Fujimura, Katsuyuki Ishikawa | 2005-03-29 |
| 6486612 | Control circuit and method for protecting a piezoelectric transformer from an open state and a short-circuited state | Takeshi Fujimura, Katsuyuki Ishikawa | 2002-11-26 |
| 6262518 | Housing for piezoelectric transformer device | Katsuyuki Ishikawa, Takeshi Fujimura, Katsumi Uesawa | 2001-07-17 |
| 6239558 | System for driving a cold-cathode fluorescent lamp connected to a piezoelectric transformer | Takeshi Fujimura, Katsuyuki Ishikawa | 2001-05-29 |
| 6198198 | Control circuit and method for piezoelectric transformer | Takeshi Fujimura, Katsuyuki Ishikawa | 2001-03-06 |
| 6172447 | Piezoelectric transformer device | Katsuyuki Ishikawa, Takeshi Fujimura, Masako Kataoka, Toru Ezaki, Takahiro Yamakawa +1 more | 2001-01-09 |
| 4676645 | Optical instrument for measuring displacement | Kayoko Taniguchi, Hideki Tsuchiya | 1987-06-30 |