Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7330990 | Information processing apparatus and method, and computer-readable medium | Hideki Sato, Tetsuo Yoshikawa, Takehiko Seki, Hajimu Iwai, Akira Hayashi | 2008-02-12 |
| 6317697 | Battery life determination apparatus and battery life determination method | Tetsuo Yoshikawa, Hiroshi Fujii | 2001-11-13 |
| 5616968 | Expandable AC power supply device | Hiroshi Fujii | 1997-04-01 |