Top Inventors at Koa Oil Company All Time
Showing 1–38 of 38 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Kosaku Noguchi | 9 |
| 2 | Eiji Kitajima | 7 |
| 2 | Honami Tanaka | 7 |
| #4 | Yukimasa Kumura | 5 |
| #5 | Masaki Fujii | 4 |
| #5 | Okiyoshi Okamura | 4 |
| #7 | Hirokazu Teraoka | 3 |
| #7 | Masanori Minohata | 3 |
| #7 | Tomonori Sunada | 3 |
| #7 | Yoshihito Tamanoi | 3 |
| #11 | Haruki Yamasaki | 2 |
| #11 | Heima Yamazaki | 2 |
| #11 | Noriyuki Tsuchiya | 2 |
| #11 | Susumu Shimizu | 2 |
| #11 | Takashi Oyama | 2 |
| #11 | Toshifumi Ishitobi | 2 |
| #17 | Eiji Maruden | 1 |
| #17 | Eiji Miura | 1 |
| #17 | Hirokazu Fujie | 1 |
| #17 | Hideyuki Matsumoto | 1 |
| #17 | Kazuhisa Nakanishi | 1 |
| #17 | Katsuma Sakai | 1 |
| #17 | Kenji Mori | 1 |
| #17 | Kiyohiko Koizumi | 1 |
| #17 | Kiyoharu Yoshimura | 1 |
| #17 | Kozo Imura | 1 |
| #17 | Masao Hayashi | 1 |
| #17 | Makoto Kitai | 1 |
| #17 | Masayuki Wakasa | 1 |
| #17 | Mitsunori Yoshimura | 1 |
| #17 | Nobuyuki Komi | 1 |
| #17 | Reijiro Nishida | 1 |
| #17 | Ryoji Ohba | 1 |
| #17 | Seiji Shimomura | 1 |
| #17 | Takayuki Noh | 1 |
| #17 | Yasuhiro Yamada | 1 |
| #17 | Yoshiharu Ohmoto | 1 |
| #17 | Kazuaki Nakaura | 1 |