| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 20 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Electrical machinery and energy | |
| #3 | Transport | |
| #4 | Measurement | |
| #5 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Umayahara Kenji | 20 |
| #2 | Yoshida Michio | 6 |
| #3 | Maenaka Takeshi | 4 |
| #4 | Imai Atsushi | 3 |
| #5 | Matsumoto Tadaichi | 3 |
| #6 | Manabe Kota | 2 |
| #7 | Igarashi Fusaki | 2 |
| #8 | Taniyama Motohiko | 1 |
| #9 | Hirakata Shuji | 1 |