Top Inventors at Maruho Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hitoshi Mizutani | 2 |
| 2 | Nobumoto Chikazawa | 2 |
| 3 | Sakumi Kanamoto | 2 |
| #4 | Setsuro Fujii | 2 |
| #5 | Toshiharu Muraoka | 2 |
| #6 | Tomoki Sakaguchi | 2 |
| #7 | Yasuhiro Yasutomi | 2 |
| #8 | Akio Ishida | 2 |
| #9 | Ayako Nakamura | 1 |
| #10 | Chieko Tanaka | 1 |
| #11 | Eiji Kobayashi | 1 |
| #12 | Hidetoshi Emi | 1 |
| #13 | Hiroki SAKIYAMA | 1 |
| #14 | Hirokazu Tanaka | 1 |
| #15 | Hiroo Uchida | 1 |
| #16 | Hideki Watanabe | 1 |
| #17 | Isao Nakagawa | 1 |
| #18 | Isamu Sakamoto | 1 |
| #19 | Kunio Takiguchi | 1 |
| #20 | Masumi Kawaguchi | 1 |
| #21 | Masahiro Takeuchi | 1 |
| #22 | Michiyo Hashimoto | 1 |
| #23 | Noriaki Kaneda | 1 |
| #24 | Seiichiro Yamasaki | 1 |
| #25 | Shin Harada | 1 |
| #26 | Takekuni Nakama | 1 |
| #27 | Tadahiro Oishi | 1 |
| #28 | Tomoyuki Fujita | 1 |
| #29 | Toshifumi Onishi | 1 |
| #30 | Tomomi Shigeno | 1 |
| #31 | Tsuyoshi Hirota | 1 |
| #32 | Yasuyuki Hitomi | 1 |
| #33 | Yasuhiko Kitoh | 1 |
| #34 | Yasuo Yoshioka | 1 |
| #35 | Yoshihiro Nakahashi | 1 |
| #36 | Yoetsu Toyoshima | 1 |
| #37 | Yukino Owaki | 1 |
| #38 | Hiroshi Ogisawa | 1 |
| #39 | Akio Fujimura | 1 |