| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 12 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Reduction of greenhouse gas emissions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Izeki Shujiro | 8 |
| #2 | Komiyaji Kaoru | 5 |
| #3 | Harada Akihiro | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2009041190A | Tilting weir | |
| JP2000018271A | Torque limitter | |
| JPH10338926A | Falling device of undulating gate | |
| JPH08333739A | Watertight rubber protector of sheathing board | |
| JPH08326040A | Hoisting device for sheathing board | |
| JPH07317047A | Winch for tipping weir | |
| JPH06257127A | Hydraulic device | |
| JPH06128926A | Hydraulic device | |
| JPH02167913A | Tipping weir | |
| JPS6319318A | Rising and falling dam | |
| JPS6314912A | Reversing weir | |
| JPS6290419A | Falling dam |