Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5959830 | Electric double layer capacitor | Masako Inagawa, Keitaro Katsu | 1999-09-28 |
| 5952715 | Chip type electronic part | Yoshinori SEKIGUCHI | 1999-09-14 |
| 5859761 | Electric double-layer capacitor | Keitaro Katsu | 1999-01-12 |
| 5786981 | Basic cell for an electric double layer capacitor | Masako Inagawa, Keitaro Katsu | 1998-07-28 |
| 5781403 | Electric double layer capacitor having hydrophobic powdery activated charcoal | Masako Inagawa, Keitaro Katsu | 1998-07-14 |
| 5398155 | Electric double layer capacitors | Kazuhiko Sato | 1995-03-14 |