Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5202042 | Heterocyclic electrolyte salts for electrolytic capacitors | Tatsunori Tsuji, Makoto Shimizu, Yutaka Yokoyama | 1993-04-13 |
| 5112511 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1992-05-12 |
| 4885115 | Liquid electrolyte for use in electrolytic capacitor | Yutaka Yokoyama | 1989-12-05 |
| 4830785 | Electrolyte for electrolytic capacitor | Tatsunori Tsuji, Yutaka Yokoyama | 1989-05-16 |
| 4810400 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1989-03-07 |
| 4786428 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1988-11-22 |
| 4762632 | Electrolyte for electrolytic capacitor | Tatsunori Tsuji, Yutaka Yokoyama | 1988-08-09 |
| 4762629 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1988-08-09 |
| 4762630 | Electrolyte for electrolytic capacitor | Tatsunori Tsuji, Yutaka Yokoyama | 1988-08-09 |
| 4762631 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1988-08-09 |
| 4762633 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1988-08-09 |
| 4762634 | Electrolyte for electrolytic capacitor | Tatsunori Tsuji, Yutaka Yokoyama | 1988-08-09 |
| 4710310 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1987-12-01 |
| 4708811 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1987-11-24 |
| 4670175 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1987-06-02 |
| 4664830 | Electrolyte for electrolytic capacitor | Yutaka Yokoyama | 1987-05-12 |