Top Inventors at Nippon Grease Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hiroki Iwamatsu | 7 |
| 2 | Seiji Okamura | 4 |
| 3 | Hiroshi Komiya | 3 |
| #4 | Masashi Mitsuoka | 3 |
| #5 | Koji Yoshizaki | 2 |
| #6 | Hiroyoshi Yasui | 1 |
| #7 | Jusei Maeda | 1 |
| #8 | Kensuke Suzuki | 1 |
| #9 | Kenji Yuki | 1 |
| #10 | Komatsugu Nishimura | 1 |
| #11 | Kunihiro Yamaguchi | 1 |
| #12 | Masayuki Kitamura | 1 |
| #13 | Masahiro Okumiya | 1 |
| #14 | Michiru Ueda | 1 |
| #15 | Motoharu Akiyama | 1 |
| #16 | Satoshi Doi | 1 |
| #17 | Teruo Yoshida | 1 |
| #18 | Toshihiro Kawaguchi | 1 |
| #19 | Toshikazu Kouno | 1 |
| #20 | Toshitaro Oguchi | 1 |
| #21 | Yasuhiro Miyamoto | 1 |
| #22 | Akihiro Yamamoto | 1 |