Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876631 | Electric double layer capacitor | Masanori Endo | 1989-10-24 |
| 4827380 | Electric double-layer capacitor | Yoshiaki Heinouchi | 1989-05-02 |
| 4803597 | Electric double-layer capacitor | Michinobu Maesaka, Michihiro Murata | 1989-02-07 |