Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5856917 | Electric power device with improved power factor | Kenichi Aonuma, Shigetaka Maeyama, Hiromitsu Hirayama, Hiroshi Hirayama, Hisahiko Abe | 1999-01-05 |
HH
Hiroko Hirayama, heiress
Overall (All Time): #3,638,562 of 4,157,543Top 90%
1
Patents All Time