| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 8 | |
| #2 | Germany | 1 | |
| #3 | United Kingdom | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Sawing | |
| #3 | Scaffolding | |
| #4 | Climate change adaptation technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Watanabe Ryuichi | 4 |
| #2 | Watanabe Matsutaro | 3 |
| #3 | Ota Michio | 3 |
| #4 | Ieda Satoshi | 2 |
| #5 | Watanabe Matsutarou | 2 |
| #6 | Komatsu Shigeru | 1 |
| #7 | Iijima Hiroyuki | 1 |
| #8 | Iida Noboru | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2009078195A | Treatment method and treatment apparatus for waste asbestos material | |
| JP2008297729A | Asbestos recovering apparatus and asbestos recovering method | |
| JP2008183497A | Method and device for treating dust | |
| JP2008073596A | Apparatus and method of removing dust in air | |
| JP2005152812A | Sprinkler | |
| JPS61179966A | Destruction of high concrete structure | |
| JPS57172072A | Apparatus for breaking high concrete structure | |
| JPS554416A | Cutter |