Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7026726 | Uninterruptible power supply device | — | 2006-04-11 |
| 6998821 | Uninterruptible power supply | Hirotaka Sakai, Hideki Miyamoto, Yasushi Mori, Yukinori Akamoto | 2006-02-14 |
| 6784641 | Uninterruptible power supply | Hirotaka Sakai, Hideki Miyamoto, Yasushi Mori, Yukinori Akamoto | 2004-08-31 |
| 6639386 | Rechargeable battery device equipped with life determination function | — | 2003-10-28 |
| 6448743 | Rechargeable battery pack | Yoshinao Sano, Kiyoshi Ishitsuka | 2002-09-10 |
| 6307353 | Secondary battery apparatus | — | 2001-10-23 |
| 5994873 | Correction device and correction method for secondary batteries connected in series | — | 1999-11-30 |
| 5497068 | Secondary battery charging circuit | — | 1996-03-05 |
| 5483145 | Secondary battery charging circuit | Sadakazu Enomoto | 1996-01-09 |
| 5477126 | Secondary battery charging circuit | — | 1995-12-19 |
| 5477127 | Secondary battery charging circuit | Sadakazu Enomoto | 1995-12-19 |
| 5391974 | Secondary battery charging circuit | Sadakazu Enomoto | 1995-02-21 |
| 5345162 | Charging circuit of secondary battery | — | 1994-09-06 |