Top Inventors at Yamamoto Electric All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Katsuji Soeda | 3 |
| 2 | Masahiko Iijima | 2 |
| 3 | Masaru Wada | 1 |
| #4 | Nitaro Hishinuma | 1 |
| #5 | Shuzo Otsuki | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Katsuji Soeda | 3 |
| 2 | Masahiko Iijima | 2 |
| 3 | Masaru Wada | 1 |
| #4 | Nitaro Hishinuma | 1 |
| #5 | Shuzo Otsuki | 1 |