Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6628103 | Power factor control apparatus and method | Daisuke Sumiya, Hirofumi Araki | 2003-09-30 |
SK
Shinichi Koyanagi
Overall (All Time): #3,524,409 of 4,157,543Top 85%
1
Patents All Time