Showing 1–24 of 24 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Nobuo Takaoka | Takasho Co. | 12 |
| 2 | Ryuichi Imai | Vallourec Mannesmann Oil & Gas France | 11 |
| 3 | Shigeki Nishida | Noritsu Koki Co. | 8 |
| #4 | Nobuyuki Nate | Konishi Chemical Ind. Co. | 5 |
| #5 | Koji Sakagami | Honda Motor Co. | 4 |
| #6 | Shigeru Kidani | Sumitomo Metal Industries | 3 |
| #6 | Nobuhisa Teramoto | — | 3 |
| #8 | Masayoshi Kakutani | Sanko Co. | 2 |
| #8 | Yasuyuki Funahashi | Mitsubishi Electric | 2 |
| #8 | Kiyoshi Tsuchihashi | Kao Soap Co. | 2 |
| #8 | Keiji Hashizume | Noritsu Koki Co. | 2 |
| #8 | Ken Nakai | Sumitomo Metal Industries | 2 |
| #8 | Hiroshi Toba | Noritsu Koki Co. | 2 |
| #8 | Shoji Iwahashi | — | 2 |
| #15 | Yuzo Kawakami | Kobe Steel | 1 |
| #15 | Tadao Nakano | — | 1 |
| #15 | Masaji Kakutani | — | 1 |
| #15 | Tooru Egoshi | Sumitomo Metal Industries | 1 |
| #15 | Hirotsugu Nakaike | Sumitomo Metal Industries | 1 |
| #15 | Katsumori Fukumoto | — | 1 |
| #15 | Kazuyuki Maruyama | USDA | 1 |
| #15 | Shouji Yakugawa | Sumitomo Metal Industries | 1 |
| #15 | Toru Nishihara | Japan Synthetic Rubber | 1 |
| #15 | Toru Ekawa | Shima Seiki Mfg. | 1 |