How many patents does
China Railway 18Th Bureau Group Company have?
patents
256
families
236
granted
18
applications
238
CN
253
JP
2
WO
1
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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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China Railway 18Th Bureau Group Company
Top ten assignees appearing on patents
2009 - 2018
2018
China Railway 18Th Bureau Group Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| slurry-balanced pipe jacking machine receiving device and technology under high water co… 🛈 | 5 | 2015 |
| water-stop sealing device and method of launching cavity opening of tube push bench unde… 🛈 | 2 | 2014 |
| tube push bench receiving device and method under high-water-pressure condition | 2 | 2014 |
| underwater grouting grout based on soft-base large immersed tunnel foundation and grouti… 🛈 | 2 | 2012 |
| test device and method for testing sealing performance of pipe joint in pipe-jacking con… 🛈 | 2 | 2015 |
| split type reaction frame realizing shield launching from working shaft and applied to s… 🛈 | 2 | 2015 |
| construction method for irregular floors with large span by utilizing high-strength stee… 🛈 | 2 | 2012 |
| open type tbm (tunnel boring machine) fullface synchronous lining trolley for hydraulict… 🛈 | 2 | 2011 |
| construction method for precisely controlling frozen soil curtain among pipes | 2 | 2015 |
| vertical reinforcement bar cutting machine | 2 | 2014 |