Showing 1–11 of 11 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Keizo Ikai | Nippon Oil | 21 |
| 2 | Masahito Hirose | Fuji Oozx | 11 |
| 3 | Yuko Harasawa | Ricoh Company | 10 |
| #4 | Yohichi Ogawa | Hitachi | 5 |
| #5 | Saburo Wakimoto | Konishiroku Photo Industry Co. | 4 |
| #6 | Kunihiro Sakata | Hitachi | 3 |
| #7 | Yasuhiro Iwafuji | Toshiba Lighting & Technology | 2 |
| #8 | Mineo Iwasawa | Toshiba | 1 |
| #8 | Kenichi Nakane | Mitsui Toatsu Chemicals, Incorporated | 1 |
| #8 | Hajime Ohsaki | Toshiba Lighting & Technology | 1 |
| #8 | Tamio Hoshino | — | 1 |