Showing 1–20 of 20 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Toshimi Matsumura | Nippondenso Co. | 20 |
| 2 | Masaki Kutsuna | Canon | 17 |
| 3 | Jun Tamenaga | Sumitomo Heavy Industries | 16 |
| #4 | Shinichiro Yahagi | Daido Tokushuko | 12 |
| #4 | Yoshinori Koba | Meinan Machinery Works | 12 |
| #6 | Masakazu Asano | Toyoda Gosei Co. | 11 |
| #6 | Haruhiko Fukaya | Ministry Of International Trade & Industry | 11 |
| #8 | Kenji Tsukahara | Nippondenso Co. | 8 |
| #9 | Toshiro Kawakami | Aisin Seiki Kabushiki Kaisha | 7 |
| #9 | Shizuo Jinno | Meiki Seisakusho | 7 |
| #11 | Yasuhiro Wato | Tokai Kogyo Co. | 6 |
| #11 | Teruaki Aoto | Meinan Machinery Works | 6 |
| #13 | Toshinori Nakaoda | Meinan Machinery Works | 5 |
| #14 | Keigo Yorioka | Aisan Industry Co. | 4 |
| #14 | Masaki Shiraiwa | Nec | 4 |
| #16 | Tetsushi Isozaki | Sumitomo Heavy Industries | 3 |
| #16 | Yoshikazu Chiba | Sumitomo Heavy Industries | 3 |
| #18 | Osamu Kanehara | Tokai Kogyo Co. | 2 |
| #18 | Ryuji Emoto | Ngk Spark Plug Co. | 2 |
| #18 | Motonori Chikazawa | Meiki Seisakusho | 2 |