Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Ryo Shimizu | Sumitomo Osaka Cement Co. | 12 |
| 2 | Hiroshi Ishii | Ricoh Company | 6 |
Part of Massachusetts
18 patents · 2 inventors
Ranked #6,715 of 43,611 cities Top 20%
Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Ryo Shimizu | Sumitomo Osaka Cement Co. | 12 |
| 2 | Hiroshi Ishii | Ricoh Company | 6 |
Part of Massachusetts