The report contains ten-year analysis with the following sections
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Title of patent family (most common patent title) |
Family members |
Filing year |
---|---|---|
spray welding device for ball body surface of ball valve | 8 | 2014 |
valve state display device | 6 | 2015 |
self-driven air charging valve | 2 | 2008 |
axial limiting structure of butterfly valve | 2 | 2015 |
tool for running-in machining of ball body and valve seat of ball valve | 2 | 2014 |
valve leakage fault on-line diagnostic system | 2 | 2014 |
high-pressure balance butterfly valve | 2 | 2014 |
valve hot test device | 2 | 2014 |
high-pressure butterfly valve | 2 | 2015 |
low-torque pressure balance type cock valve | 2 | 2015 |