| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 12 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakajima Kanshi | 11 |
| #2 | Nakajima Osami | 3 |
| #3 | Tsubata Kazuharu | 1 |
| #4 | Ikeda Tomoji | 1 |
| #5 | Kuramoto Koichi | 1 |
| #6 | Sakamoto Keiko | 1 |
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