Top Inventors at Polymer Processing Research Institute All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kazuhiko Kurihara | 28 |
| 2 | Hiroshi Yazawa | 18 |
| 3 | Haruhisa Tani | 13 |
| #4 | Yuki Kuroiwa | 7 |
| #5 | Shigezo Kojima | 6 |
| #6 | Tokio Okada | 6 |
| #7 | Masahide Yazawa | 5 |
| #8 | Shuichi Murakami | 5 |
| #9 | Yoshiro Morino | 5 |
| #10 | Seizo Kobayashi | 4 |
| #11 | Setsuya Tsuyama | 4 |
| #12 | Yasuo Sasaki | 4 |
| #13 | Yoshimu Iwanami | 4 |
| #14 | Hirosi Yazawa | 3 |
| #15 | Sumio Yoshida | 3 |
| #16 | Toshikazu Ohishi | 3 |
| #17 | Yoichi Mazawa | 3 |
| #18 | Hideyo Rohyama | 2 |
| #19 | Kazutosi Nomiyama | 2 |
| #20 | Kazuhiro Yabe | 2 |
| #21 | Kintaro Aihara | 2 |
| #22 | Masashi Kobayashi | 2 |
| #23 | Shin-ichi Umejima | 2 |
| #24 | Shigeki Yokoyama | 2 |
| #25 | Tadashi Honda | 2 |
| #26 | Takashi Mizoe | 2 |
| #27 | Yuuki Kuroiwa | 2 |
| #28 | Mihoko Okada | 1 |
| #29 | Osamu Otsu | 1 |
| #30 | Shigezou Kojima | 1 |
| #31 | Shoichi Yazawa | 1 |
| #32 | Takashi Ishida | 1 |
| #33 | Tadayoshi Katoh | 1 |
| #34 | Toshio Ohta | 1 |
| #35 | Toshikazu Oishi | 1 |
| #36 | Takashi Komazawa | 1 |
| #37 | by Hiroshi Yazawa, executor | 1 |
| #38 | Akira Nii | 1 |