| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 5 | |
| #2 | WIPO (World Intellectual Property Organization) | 2 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Environmental technology | |
| #3 | Engines, pumps and turbines | |
| #4 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Song Zhanggen | 12 |
| #2 | Song Suwei | 3 |
| #3 | Song Zhicheng | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CN105804914A | Efficient rotating disc type hydro electric generating set | |
| CN105569911A | Method and device for rotating disc type hydraulic electrogenerating | |
| CN104652346A | Method and system for purifying air | |
| CN1908498A | Pipe used high pressure resistant rotary compensator | |
| CN1975226A | Underground pipeline non-support long-distance compensating method and system thereof |