Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657412 | Pulse width modulation method, pulse width modulator and power converter | Seiji Ishida, Keijiro Sakai, Toshiaki Okuyama, Hiroshi Fujii, Hiroyuki Tomita +2 more | 2003-12-02 |
| 6531843 | Driving system of AC motor | Yoshitaka Iwaji, Tsunehiro Endo, Hiroshi Fujii | 2003-03-11 |