How many patents does
Wuhan Shengyu Drainage Systems Company have?
patents
265
families
211
granted
54
applications
211
CN
265
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The report contains ten-year analysis with the following sections
- patent filing analysis
- worldwide filing analysis
- patent family analysis
- application analysis
- granted analysis
- classification analysis
- citation analysis
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Wuhan Shengyu Drainage Systems Company
Top ten assignees appearing on patents
Wuhan Shengyu Drainage Systems Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| roller shutter type flexible flap valve | 2 | 2014 |
| hydraulic bottom-open-type weir gate | 2 | 2014 |
| novel rain gauge | 2 | 2015 |
| round flap valve | 2 | 2014 |
| slowly-open slowly-close fully-open and vibration-free swing check valve | 2 | 2014 |
| pipeline internal leakage repair pipe | 2 | 2014 |
| hook type hydraulic automatic-flushing gate | 2 | 2014 |
| constant liquid level adjusting check gate with grid | 2 | 2014 |
| float-type automatic control flap valve | 2 | 2014 |
| hydraulic rotary weir gate | 2 | 2014 |