Showing 1–20 of 20 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Masaki Nakagawa | Ricoh Company | 4 |
| 1 | Tokifumi Tanaka | Brother Kogyo | 4 |
| 3 | Hideki Miyazaki | Hitachi | 3 |
| 3 | Shoichi MORIMURA | Okuma | 3 |
| #5 | Masaki Mizutani | Canon | 2 |
| #5 | Takahiro Minatani | Ckd | 2 |
| #5 | Hiroshi Inagaki | Ngk Spark Plug Co. | 2 |
| #5 | Motoyoshi KIMURA | Sumitomo Electric Industries | 2 |
| #9 | Kaname Miwa | Ngk Spark Plug Co. | 1 |
| #9 | Takashi Norihisa | Okuma | 1 |
| #9 | Junki IWABUCHI | Ngk Spark Plug Co. | 1 |
| #9 | Masayuki Motomura | Ngk Spark Plug Co. | 1 |
| #9 | Koichiro Iwanaga | Sumitomo Riko Company Limited | 1 |
| #9 | Kuniharu Tanaka | Ngk Spark Plug Co. | 1 |
| #9 | Shimpei Miyagawa | Sumitomo Riko Company Limited | 1 |
| #9 | Takahiko ANDO | Mitsubishi Electric | 1 |
| #9 | Shunji Maruyama | Seiko Epson | 1 |
| #9 | Yusuke Ichihashi | Mitsubishi Heavy Industries Aero Engines | 1 |
| #9 | Shinji Shibata | Toto | 1 |
| #9 | Yasunori Nimura | Sumitomo Riko Company Limited | 1 |