Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9116176 | Optical current transformer for gas-insulated apparatus | Wei Zhang, Masashi Kawamata, Hiroyuki Nakamichi, Daigorou Shiozawa | 2015-08-25 |
| 8933686 | Single-phase optical current transformer | Wei Zhang | 2015-01-13 |
| 8847084 | Insulating spacer with built-in optical fiber | Wei Zhang, Masashi Kawamata, Daigorou Shiozawa | 2014-09-30 |