Top Inventors at Hiroshima Kasei All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hisakazu Matsui | 2 |
| 2 | Yuji Yamamoto | 2 |
| 3 | Daigo Matsuoka | 1 |
| #4 | Hiromasa Fujii | 1 |
| #5 | Hiroshi Miyachi | 1 |
| #6 | Hiroshi Okada | 1 |
| #7 | Hideyuki Shigematsu | 1 |
| #8 | Hiroshi Tanaka | 1 |
| #9 | Hisaichiro Uchida | 1 |
| #10 | Kimiaki Nagatome | 1 |
| #11 | Kyozo Watanabe | 1 |
| #12 | Maiko Takebe | 1 |
| #13 | Ryo Ashikawa | 1 |
| #14 | Shozaburo Dobashi | 1 |
| #15 | Shinji Hira | 1 |
| #16 | Takahiro Hayama | 1 |
| #17 | Tatsuo Ishida | 1 |
| #18 | Toshinori Harada | 1 |
| #19 | Yuuichi Takagaki | 1 |
| #20 | Taizo Kunimura | 1 |