| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 5 | |
| #2 | Canada | 3 | |
| #3 | United States | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | He Zenghua | 12 |
| Publication | Filing date | Title |
|---|---|---|
| CN110056668A | A kind of fixing ball valve | |
| CN106594311A | Fixed ball valve | |
| CN106151577A | A kind of support for ball valve and fixing ball valve | |
| CN103982671A | Floating ball valve | |
| CN104006183A | Valve seat used for floating ball valve |