Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864472 | Solid electrolyte capacitor | — | 1989-09-05 |
| 4828738 | Solid electrolytic capacitor | Sohji Tsuchiya, Toshikuni Kojima, Yasuo Kudoh, Yasunari Hoshii, Hirohiko Itoh | 1989-05-09 |