Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691686 | Transformer zero-phase current transformer | Masahiro Ishikawa, Osamu Hasegawa, Morio Machida | 1997-11-25 |
YO
Yasuhiko Ookubo
Overall (All Time): #3,730,373 of 4,157,543Top 90%
1
Patents All Time