| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Chemical engineering | |
| #5 | Measurement | |
| #6 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Water-closets with flushing devices | |
| #2 | Domestic plumbing installations | |
| #3 | Venting or aerating devices | |
| #4 | Spraying devices | |
| #5 | Unspecified technologies | |
| #6 | Separation | |
| #7 | Sanitary equipment | |
| #8 | Chemical or physical processes | |
| #9 | Sewers | |
| #10 | Weighing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Matsui Hideyuki | 3 |
| #2 | Hashimoto Kenichi | 3 |
| #3 | Kamiyoshi Tetsuro | 3 |
| #4 | Harashima Tatsunari | 3 |
| #5 | Kanashiro Masanobu | 3 |
| #6 | Kawana Kohei | 3 |
| #7 | Hatakeyama Makoto | 3 |
| #8 | Kashirajima Shu | 2 |
| #9 | Hashimoto Hiroshi | 2 |
| #10 | Imaizumi Shoko | 2 |