| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 13 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Environmental technology | |
| #3 | Packaging and shipping | |
| #4 | Machines | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Sewers | |
| #2 | Hydraulic engineering | |
| #3 | Domestic plumbing installations | |
| #4 | Venting or aerating devices | |
| #5 | Transport or storage devices | |
| #6 | Milling | |
| #7 | Water treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Han Yongkun | 13 |
| Publication | Filing date | Title |
|---|---|---|
| CN104514278A | Novel flood gate | |
| CN104511352A | Crushing separation grille | |
| CN104514210A | Flap valve | |
| CN104514212A | Flashboard gate | |
| CN104512045A | Spiral squeezer | |
| CN104511474A | Solid garbage crusher | |
| CN104514277A | Flood gate | |
| CN104512050A | Shaftless spiral conveyor press | |
| CN104514213A | Stop log gate | |
| CN104512692A | Spiral conveyor | |
| CN104514276A | Novel flap valve | |
| CN104514246A | Garbage crusher | |
| CN104514211A | Water guard gate |