Top Inventors at Isao Kai All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Tsutomu Yamasawa | 2 |
| 2 | Yoshinori Miyawaki | 2 |
| 3 | Kazuhiro Matumoto | 1 |
| #4 | Osamu Shirasaki | 1 |
| #5 | Satoshi Ueno | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Tsutomu Yamasawa | 2 |
| 2 | Yoshinori Miyawaki | 2 |
| 3 | Kazuhiro Matumoto | 1 |
| #4 | Osamu Shirasaki | 1 |
| #5 | Satoshi Ueno | 1 |