| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 4 | |
| #2 | Belgium | 3 | |
| #3 | Netherlands | 3 | |
| #4 | China | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Pipes | |
| #3 | Water treatment | |
| #4 | Servomotors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tang Zhongbo | 9 |
| #2 | Zhongbo Tang | 3 |
| Publication | Filing date | Title |
|---|---|---|
| ZA202002642B | Multi-hole flow-regulating shut-off valve | |
| BE1027546B1 | NEW V-SHAPED POROUS FLOW REGULATION STOP VALVE PRACTICE TO BE INSTALLED | |
| BE1027606B1 | SPRING BALL CHECK VALVE WITH GOOD WATERPROOFING | |
| BE1027547B1 | Electrically operated non-return valve for pipes | |
| CN108087616A | Spring reset ball valve | |
| CN106499840A | A kind of pneumatic tubing clip valve |