Top Inventors at Sumitomo Osaka Cement Co. 2021
| Rank | Name | Patents |
|---|---|---|
| 1 | Norikazu Miyazaki | 6 |
| 2 | Toru Sugamata | 6 |
| 3 | Kei Katou | 3 |
| #4 | Tokutaka Hara | 3 |
| #5 | Hitoshi Kouno | 2 |
| #6 | Kouji Oono | 2 |
| #7 | Mamoru Kosakai | 2 |
| #8 | Masataka Oyama | 2 |
| #9 | Shinichi Maeta | 2 |
| #10 | Takao Kitagawa | 2 |
| #11 | Tetsuya Nakabeppu | 2 |
| #12 | Teppei YAKUBO | 2 |
| #13 | Tomomi ITO | 2 |
| #14 | Toshio Kataoka | 2 |
| #15 | Yuuki Kinpara | 2 |
| #16 | Yukio Miura | 2 |
| #17 | Hideki Ichimei | 1 |
| #18 | Hironori Kugimoto | 1 |
| #19 | Hirokazu Matsushita | 1 |
| #20 | Hiroaki Nagatomo | 1 |
| #21 | Kazuto Ando | 1 |
| #22 | Kazunori Ishimura | 1 |
| #23 | Keisuke Maeda | 1 |
| #24 | Keigo Maki | 1 |
| #25 | Masayuki Motoya | 1 |
| #26 | Makoto Shimada | 1 |
| #27 | Nobuhiro Hidaka | 1 |
| #28 | Norito MORISHITA | 1 |
| #29 | Ryuuji Hayahara | 1 |
| #30 | Ryuuta YAMAYA | 1 |
| #31 | Satoru Oshitari | 1 |
| #32 | Shingo Takano | 1 |
| #33 | Tetsuya Fujino | 1 |
| #34 | Tetsuya Goto | 1 |
| #35 | Tetsuro ITAGAKI | 1 |
| #36 | Toyomasa NAKANO | 1 |
| #37 | Tsutomu NOZOE | 1 |
| #38 | Yoshiaki Moriya | 1 |
| #39 | Yoshihiko Murakami | 1 |
| #40 | Yu Kataoka | 1 |
| #41 | Yuki Uchikawa | 1 |