Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5277843 | Voltage non-linear resistor | Osamu Imai, Ritsu Sato | 1994-01-11 |
| 5107242 | Voltage non-linear resistor for gapped lightning arrestors and method of producing the same | Osamu Imai, Ritsu Sato | 1992-04-21 |