Top Inventors at Ishihara Sangyo Kaisha 1989
Showing 1–30 of 30 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Takahiro Haga | 7 |
| 2 | Toru Koyanagi | 4 |
| 3 | Nobutoshi Yamada | 3 |
| 3 | Fumio Kimura | 3 |
| 3 | Hideo Sugi | 3 |
| #6 | Masahiko Ikeguchi | 2 |
| #6 | Tsunezo Yoshida | 2 |
| #6 | Hiroshi Okada | 2 |
| #6 | Kazuyuki Maeda | 2 |
| #10 | Yasuhiro Fujii | 1 |
| #10 | Kazumasa Yokoyama | 1 |
| #10 | Kiyomitsu Yoshida | 1 |
| #10 | Koji Hayashi | 1 |
| #10 | Masashi Sakamoto | 1 |
| #10 | Masahiro Watanabe | 1 |
| #10 | Nobuo Kondo | 1 |
| #10 | Nobuyuki Sakashita | 1 |
| #10 | Osamu Imai | 1 |
| #10 | Shigeo Murai | 1 |
| #10 | Tadakazu Suyama | 1 |
| #10 | Tadaaki Toki | 1 |
| #10 | Tooru Takenouchi | 1 |
| #10 | Tsunetaka Nakajima | 1 |
| #10 | Chimoto Honda | 1 |
| #10 | Eiji Yamada | 1 |
| #10 | Hajime Murakami | 1 |
| #10 | Haruo Okuda | 1 |
| #10 | Hiroo Ikeura | 1 |
| #10 | Hiroshi Shimoharada | 1 |
| #10 | Hideo Takahashi | 1 |