Top Inventors at Chemical Grouting Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Mitsuhiro Shibazaki | 8 |
| 2 | Hiroshi Yoshida | 6 |
| 3 | Hiroaki Kubo | 5 |
| #4 | Shunji Jinbo | 3 |
| #5 | Isao Yamaki | 2 |
| #6 | Kaoru Ishizuka | 2 |
| #7 | Masahiro Iji | 2 |
| #8 | Masami Yoda | 2 |
| #9 | Mitsuhiro Shibasaki | 2 |
| #10 | Shin-ichi Suzuki | 2 |
| #11 | Sotoo Kubo | 2 |
| #12 | Toshikuni Hashimoto | 2 |
| #13 | Tsutao Takahashi | 2 |
| #14 | Tsutomu Tsuchiya | 2 |
| #15 | Hiroyuki Abe | 1 |
| #16 | Hiroshi Miyazaki | 1 |
| #17 | Hiroshi Soma | 1 |
| #18 | Masanori Kumekawa | 1 |
| #19 | Masahiro Yoshihara | 1 |
| #20 | Takeru Ariizumi | 1 |
| #21 | Takanori Tsutaoka | 1 |
| #22 | Tetsuo Nakamura | 1 |
| #23 | Toshio Imai | 1 |
| #24 | Toshitsugu Jinbo | 1 |
| #25 | Yuichi Tachiwada | 1 |
| #26 | Hiroshi Kotacki | 1 |
| #27 | Hachiro Hatakeda | 1 |
| #28 | Akira Mori | 1 |