Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4681672 | Method for etching electrode foils for an aluminium electrolytic capacitor | Koichi Kojima, Masanori Okabayashi, Ryoichi Shimatani, Kenji Toyama, Nobuyoshi Kanzaki | 1987-07-21 |