Top Inventors at Toho Kasei Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Norio Maeda | 3 |
| 2 | Satoshi Shimizu | 3 |
| 3 | Susumu Kawato | 3 |
| #4 | Eri Mukai | 2 |
| #5 | Hiroshi Aihara | 2 |
| #6 | Hirotaka ITAMI | 2 |
| #7 | Hirokazu Yamamoto | 2 |
| #8 | Katsunori Takada | 2 |
| #9 | Masao Oono | 2 |
| #10 | Meiten Kou | 2 |
| #11 | Susumu Matsuda | 2 |
| #12 | Takashi Kanemura | 2 |
| #13 | Takafumi Nakagawa | 2 |
| #14 | Tetsuhiro Kodani | 2 |
| #15 | Toru Sakai | 2 |
| #16 | Yoshio Takemura | 2 |
| #17 | Hiroaki Mizunoe | 1 |
| #18 | Hideo Shibahara | 1 |
| #19 | Isamu Noguchi | 1 |
| #20 | Kazuya Ninomiya | 1 |
| #21 | Kazuhiro Sumi | 1 |
| #22 | Kentaro MIYOSHI | 1 |
| #23 | Ken OGASAHARA | 1 |
| #24 | Kousuke Nishikawa | 1 |
| #25 | Koji Sumi | 1 |
| #26 | Masahide KATO | 1 |
| #27 | Masashi Suzuki | 1 |
| #28 | Naoaki Tani | 1 |
| #29 | Noboru Tamaki | 1 |
| #30 | Satoru Murata | 1 |
| #31 | Shinya Morita | 1 |
| #32 | Takanori Kawanishi | 1 |
| #33 | Takazo Sotojima | 1 |
| #34 | Toshirou Motoji | 1 |
| #35 | Yasuhito KODA | 1 |
| #36 | Yoshiaki Hayashi | 1 |
| #37 | Yutaka Kedo | 1 |