Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Makoto Kikuchi | Hitachi | 4 |
| 2 | Toshiharu Hiraoka | Toyo Tanso Co. | 3 |
| 2 | Tomohiko Sato | Toshiba Lighting & Technology | 3 |
| #4 | Satoshi Kojima | Ricoh Company | 2 |
| #4 | Masatoshi Yamaji | Toyo Tanso Co. | 2 |
| #6 | Toshihiro Hosokawa | Tsubakimoto Chain | 1 |
| #6 | Kouki Endoh | Toyota | 1 |
| #6 | Yasuhide Takeda | Hitachi | 1 |
| #6 | Toyokazu Itou | — | 1 |