Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874680 | Lithium secondary battery | Toshihiko Ikehata, Kenichi Takata | 1989-10-17 |
| 4844994 | Chargeable electrochemical device | Keigo Momose, Hayashi Kayakawa | 1989-07-04 |
NK
Nobuharu Koshiba
Overall (1989): #19,203 of 140,708Top 15%
2
Patents 1989