Top Inventors at Nippon Petroleum Refining Company, Limited 2011
Showing 1–13 of 13 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Hiromitsu Hashisaka | 2 |
| 1 | Hideki Ono | 2 |
| 1 | Ippei Fujinaga | 2 |
| 1 | Kazuhisa Nakanishi | 2 |
| 1 | Keiji Higashi | 2 |
| 1 | Kiwamu Takeshita | 2 |
| 1 | Masaki Fujii | 2 |
| 1 | Takashi Oyama | 2 |
| 1 | Tamotsu Tano | 2 |
| #10 | Akio Sakamoto | 1 |
| #10 | Keizou Ikai | 1 |
| #10 | Takashi Noro | 1 |
| #10 | Toshitaka Fujii | 1 |