Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691620 | Battery charging method | Hitoshi Akiho | 1997-11-25 |
| 5680027 | Battery pack including internal capacity monitor for monitoring groups of battery cells | Masaru Hiratsuka, Shigeki Murayama, Yasuhito Eguchi, Kaoru Tomono | 1997-10-21 |