Top Inventors at Nishikawa Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Yoji Shimura | 8 |
| 2 | Hideaki Mogi | 5 |
| 3 | Jun Yasukawa | 5 |
| #4 | Sho Ikeda | 5 |
| #5 | Yasuyuki Nishikawa | 5 |
| #6 | Akihiko Kawasaka | 5 |
| #7 | Seiji Tainaka | 4 |
| #8 | Shinano Yamada | 4 |
| #9 | Ko Tajima | 3 |
| #10 | Mari Aoki | 3 |
| #11 | Hiroyuki Nagayama | 2 |
| #12 | Kanna Matsuyama | 2 |
| #13 | Masataka Ogasawara | 2 |