Top Inventors at Koa Glass Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Yoshinao Kobayashi | 4 |
| 2 | Daisuke Date | 2 |
| 3 | Kenichi Tanaka | 2 |
| #4 | Kunihiro Fushimi | 2 |
| #5 | Masahiro Takahashi | 2 |
| #6 | Yoshiaki Kamiya | 2 |
| #7 | Eiji Ue | 1 |
| #8 | Juji Ishigame | 1 |
| #9 | Kenjirou Arai | 1 |
| #10 | Kunihiko Nemoto | 1 |
| #11 | Masao Ishii | 1 |
| #12 | Mamoru Kitamura | 1 |
| #13 | Michiko Takahashi | 1 |
| #14 | Naoki Nakamura | 1 |
| #15 | Naomasa Saito | 1 |
| #16 | Noriyuki Nishiyama | 1 |
| #17 | Satoshi Niigawa | 1 |
| #18 | Shinobu Kanamaru | 1 |
| #19 | Shotaro TAKAHASHI | 1 |
| #20 | Takashi Fushimi | 1 |
| #21 | Takenori Yamanaka | 1 |
| #22 | Tsuyoshi Sato | 1 |
| #23 | Yuya Sasaki | 1 |