| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 4 | |
| #2 | China | 3 | |
| #3 | Australia | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Republic of Korea | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Thermal processes | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Refrigerators | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yu Shijun | 11 |
| Publication | Filing date | Title |
|---|---|---|
| CN104879530A | Plunger type four-way electromagnetic reversing valve | |
| US2016334151A1 | Rotary four-way reversing valve with low pressure drop and low leakage | |
| WO2015100752A1 | Low-pressure, leakage-reduced, energy-saving four-way reversing valve | |
| CN102042422A | Hard sealing cock valve |