Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4547314 | Semiconductive ceramic materials with a voltage-dependent nonlinear resistance | Masaru Masuyama, Nobutatsu Yamaoka | 1985-10-15 |
| 4545929 | Ceramic materials with a voltage-dependent nonlinear resistance | Masaru Masuyama, Nobutatsu Yamaoka | 1985-10-08 |
| 4490318 | Semiconductive ceramic materials with a voltage-dependent nonlinear resistance, and process for preparation | Masaru Masuyama, Nobutatsu Yamaoka | 1984-12-25 |
| 4438214 | Semiconductive ceramic materials with a voltage-dependent nonlinear resistance, and process for preparation | Masaru Masuyama, Nobutatsu Yamaoka | 1984-03-20 |