Showing 1–13 of 13 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kazutaka Hayashi | Hoya | 25 |
| 2 | Makoto Iwata | Sumitomo Wiring Systems | 17 |
| 3 | Ryuichi Sugimoto | Mitsui Toatsu Chemicals, Incorporated | 15 |
| #4 | Toshiyuki Kawaharamura | Kochi Prefectural Public University | 7 |
| #5 | Akihiko Igawa | Clariant Finance (Bvi) Limited | 5 |
| #6 | Kiyomi Yamada | Mitsubishi Mining | 4 |
| #6 | Naomichi Okamoto | Toyota Central R&D Labs | 4 |
| #8 | Keiichiro Kanehisa | Sumitomo | 3 |
| #9 | Harumi Kawasaki | Pentax | 2 |
| #9 | Hideki Tanigami | Hokuriku Electric Industry Co. | 2 |
| #11 | Ryosuke Sugita | Yamaha Motor | 1 |
| #11 | Yukiyoshi Takiguchi | Yamaha Motor | 1 |
| #11 | Nobuharu Obayashi | Kawai Gakki Seisakusho | 1 |