Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889536 | Roll type solid electrolyte capacitor | Yoshiaki Arakawa, Takashi Ikezaki, Shoji Yabe, Yutaka Yokoyama, Yuichi Hamaguchi +1 more | 1989-12-26 |
| 4888666 | Roll type solid electrolytic capacitor | Yoshiaki Arakawa | 1989-12-19 |
| 4797789 | Solid electrolytic capacitor | Yoshiaki Arakawa, Takashi Ikezaki | 1989-01-10 |