Top Inventors at Diamet All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Tsuneo Maruyama | 25 |
| 2 | Yoshinari Ishii | 19 |
| 3 | Teruo Shimizu | 9 |
| #4 | Shinichi Takezoe | 8 |
| #5 | Hideo Sakai | 7 |
| #6 | Yoshiki Tamura | 7 |
| #7 | Kinya Kawase | 4 |
| #8 | Takashi Nakai | 4 |
| #9 | Gakuji Uozumi | 3 |
| #10 | Hajime Kouno | 3 |
| #11 | Jyun Katou | 3 |
| #12 | Muneaki Watanabe | 3 |
| #13 | Ryoji Nakayama | 3 |
| #14 | Yasuhiro Tsukada | 3 |
| #15 | Hiroaki Ikeda | 2 |
| #16 | Kazunori Igarashi | 2 |
| #17 | Kenji Orito | 2 |
| #18 | Masahisa Miyahara | 2 |
| #19 | Tomoe Obata | 2 |
| #20 | Atsushi Shiotani | 1 |
| #21 | Eiichiro Niizuma | 1 |
| #22 | Hideki Narisako | 1 |
| #23 | Hiroshi Tanaka | 1 |
| #24 | Katsuaki Hosono | 1 |
| #25 | Kenichi Kato | 1 |
| #26 | Naotaka Honda | 1 |
| #27 | Nobukazu Fujii | 1 |
| #28 | Osamu Sakai | 1 |
| #29 | Ryosuke FUKUDA | 1 |
| #30 | Tadashi Hazama | 1 |
| #31 | Tatsuki Mizuno | 1 |
| #32 | Takayuki Suenaga | 1 |
| #33 | Yuji Aoki | 1 |