Sumida, JP ranks #3,613 worldwide for total patents filed in 2021, with 32 patents from 17 inventors. Leading employers of inventors based in Sumida, JP include Ricoh Company, Sanyo Electric Co., Kabushiki Kaisha Toshiba.
Showing 1–17 of 17 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Tomoya FUJII | Ricoh Company | 4 |
| 2 | Yasuhiro Yamauchi | Sanyo Electric Co. | 3 |
| 2 | Tomoaki Sawabe | Kabushiki Kaisha Toshiba | 3 |
| 2 | Fumina Abo | Kao | 3 |
| #5 | Yukiko Whalen | IBM | 2 |
| #5 | Katsuyuki Totsu | — | 2 |
| #5 | Koji Nakanishi | Applied Materials | 2 |
| #5 | Masahiro Oka | Daikin Industries | 2 |
| #5 | Kotaro Ohori | Fujitsu Limited | 2 |
| #5 | Kuang Min Tan | — | 2 |
| #11 | Katsutoshi Hara | Kao | 1 |
| #11 | Koichi Yaeguchi | Minebea Mitsumi | 1 |
| #11 | Akira Kuragano | Kao | 1 |
| #11 | Aya SASAKI | Kao | 1 |
| #11 | Shohei AIKAWA | Shionogi & Co. | 1 |
| #11 | Hiroyuki Takizawa | Olympus | 1 |
| #11 | Tomoka Maekawa | Kao | 1 |