Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Keiji Kubo | Takeda Chemical Industries | 39 |
| 2 | Tatsuo Yamamoto | Shinagawa Fuel Co. | 16 |
| 3 | Toshifumi Uchiyama | Yamaha Motor | 6 |
| #4 | Takayuki Kubota | Murata Manufacturing Co. | 4 |
| #4 | Shigeru Tsuboi | Kubota Tekko Kabushiki Kaisha | 4 |
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