Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594406 | Zinc oxide varistor and process for the production thereof | Kazushige Koyama, Masaaki Katsumata | 1997-01-14 |
| 5592140 | Varistor formed of bismuth and antimony and method of manufacturing same | Hideaki Tokunaga, Yasuo Wakahata | 1997-01-07 |