How many patents does
Powerchina Huadong Engineering Corporation have?
patents
313
families
241
granted
58
applications
255
CN
290
US
23
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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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Powerchina Huadong Engineering Corporation
Top ten assignees appearing on patents
2009 - 2018
2009
Powerchina Huadong Engineering Corporation
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| method for sampling jointed rock mass | 4 | 2011 |
| composite geomembrane anti-seepage structure capable of automatically adapting to weir b… 🛈 | 4 | 2016 |
| surrounding rock pre-treatment method for tbm passing through round-tunnel section with … 🛈 | 4 | 2016 |
| method for testing frictional resistance of inner side wall and outer side wall of pipe … 🛈 | 4 | 2016 |
| economical debris flow blocking dam structure and construction method thereof | 4 | 2016 |
| device for disturbance of soil at back of shield tunnel | 4 | 2016 |
| fan base with pressure dispersed type arrangement high-strength pre-stressed anchor rods… 🛈 | 4 | 2014 |
| stress-strain testing system for large-diameter steel pipe pile of offshore wind turbine… 🛈 | 3 | 2016 |
| integrated type rock mass structural surface direct shear apparatus and direct shear tes… 🛈 | 3 | 2016 |
| horizontal type filter device for sea water desalination | 2 | 2015 |