Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8143858 | Electrical apparatus, electrical apparatus system, and power supply apparatus | Shuichi Tsugawa | 2012-03-27 |
| D645814 | Storage battery | Kazuumi Otani, Takumi Nakahira | 2011-09-27 |
| D623590 | Storage battery | Kazuumi Otani | 2010-09-14 |
| D601494 | Storage battery | Kazuumi Otani | 2009-10-06 |
| D555587 | Storage battery for electronic equipment | Tomoki Yamamoto | 2007-11-20 |