Top Inventors at Ipposha Oil Industries Co. All Time
Showing 1–16 of 16 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Shinichi Kumagae | 3 |
| 1 | Takaichi Yamamoto | 3 |
| 3 | Kazuto Kashiwai | 2 |
| 3 | Sadahiko Nishikawa | 2 |
| 3 | Seiji Sugimori | 2 |
| #6 | Hiroyuki Kawabata | 1 |
| #6 | Kaoru Hamada | 1 |
| #6 | Katsuaki Nakao | 1 |
| #6 | Kazuhide Tsuji | 1 |
| #6 | Kouji Kanemoto | 1 |
| #6 | Michihira Endoh | 1 |
| #6 | Reiko Sato | 1 |
| #6 | Shigenobu Fujita | 1 |
| #6 | Takeshi Kimura | 1 |
| #6 | Tatsuo Manabe | 1 |
| #6 | Yoshihide Kimura | 1 |