Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Hiroshi Ishii | Ricoh Company | 301 |
| 2 | Ryo Shimizu | Sumitomo Osaka Cement Co. | 91 |
Part of Massachusetts
392 patents · 2 inventors
Ranked #7,007 of 111,555 cities Top 7%
Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Hiroshi Ishii | Ricoh Company | 301 |
| 2 | Ryo Shimizu | Sumitomo Osaka Cement Co. | 91 |
Part of Massachusetts