Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D388051 | Battery | Keiichi Harada, Noriko Himeda, Chikara Kasai | 1997-12-23 |
| 5637416 | Cylindrical battery | Fumihiko Yoshii, Kaoru Okinaga, Katsuhiro Okamoto, Masaru Watanabe | 1997-06-10 |