Top Inventors at Nkg Spark Plug Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hidetoshi Baba | 1 |
| 2 | Hisashi Ito | 1 |
| 3 | Hisashi Koduka | 1 |
| #4 | Junichi Ichikawa | 1 |
| #5 | Kazuhisa Itakura | 1 |
| #6 | Kazuo Kondo | 1 |
| #7 | Kenji Ito | 1 |
| #8 | Mitsuyoshi Kawamura | 1 |
| #9 | Naomasa Wakita | 1 |
| #10 | Norihisa Kitajima | 1 |
| #11 | Shigeaki Akao | 1 |
| #12 | Takio Kojima | 1 |
| #13 | Takashi Oba | 1 |
| #14 | Tadashi Shingaki | 1 |
| #15 | Asao Morikawa | 1 |