Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5349301 | Multiple amplifier system for a car | — | 1994-09-20 |
| 4919518 | Multi-screen projector | Masanori Ogino, Yoshiaki Iwahara, Yuzo Tamura, Akio Yamamoto | 1990-04-24 |
HK
Hiroshi Kaiwa
Hitachi: 1 patents #17,742 of 28,497Top 65%
Tohoku Pioneer Electronic: 1 patents #21 of 73Top 30%
Overall (All Time): #2,297,033 of 4,157,543Top 60%
2
Patents All Time