Top Inventors at Tsuchiya Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hiroaki Hayashi | 5 |
| 2 | Masahito Hoshino | 3 |
| 3 | Haruyuki Nakanishi | 2 |
| #4 | Hideki Horizono | 2 |
| #5 | Kiyomi Kozuka | 2 |
| #6 | Kotaro TSUJI | 2 |
| #7 | Mikio MURAOKA | 2 |
| #8 | Naomoto Ishikawa | 2 |
| #9 | Nobuyuki Kamihara | 2 |
| #10 | Osamu Yoshida | 2 |
| #11 | Shigeaki Murata | 2 |
| #12 | Toshiyuki TAKAYANAGI | 2 |
| #13 | Hachiro Ohnishi | 1 |
| #14 | Hideaki Kato | 1 |
| #15 | Hiroshi Shibata | 1 |
| #16 | Ikuro Sugiyama | 1 |
| #17 | Katsuhiko Nishida | 1 |
| #18 | Kazuyoshi Tahashi | 1 |
| #19 | Kazuhiro Yoshida | 1 |
| #20 | Kazuhiro Yoshihara | 1 |
| #21 | Kiyoshi Chatani | 1 |
| #22 | Masahiko Kitamura | 1 |
| #23 | Mitsuhiro Inoue | 1 |
| #24 | Miyuki Ogasawara | 1 |
| #25 | Nobutaka Honma | 1 |
| #26 | Tatsushi Kamiya | 1 |
| #27 | Toyohiro Kanzaki | 1 |
| #28 | Tokio Naruse | 1 |
| #29 | Yasuyuki Ohara | 1 |
| #30 | Ai Nishida | 1 |