Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4897219 | Voltage-dependent non-linear resistance ceramic composition | Keiichi Noi, Akihiro Takami, Kimiko Kumazawa | 1990-01-30 |
| 4839097 | Voltage-dependent non-linear resistance ceramic composition | Keiichi Noi, Akihiro Takami, Kimiko Kumazawa | 1989-06-13 |