How many patents does
China Railway Shisiju Group Corporation have?
patents
332
families
303
granted
23
applications
309
CN
328
WO
4
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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 Shisiju Group Corporation
Top ten assignees appearing on patents
2009 - 2018
2018
China Railway Shisiju Group Corporation
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| open trench tunnel main structure tall side wall unilateral vertical mold and constructi… 🛈 | 4 | 2015 |
| box girder automatic maintaining system and application method thereof | 2 | 2014 |
| covering earth balanced safe receiving method of large-diameter shield tunneling machine | 2 | 2017 |
| open type main structure side wall bailey truss formwork of open trench tunnel and const… 🛈 | 2 | 2015 |
| handpiece-detachable pipe jacking machine applied to pipe screen construction | 2 | 2015 |
| welding device for longitudinal water-stop belt of tunnel | 2 | 2014 |
| full-automatic tunnel concrete lining maintenance device and use method thereof | 2 | 2015 |
| bridge drain pipe construction installation technology | 2 | 2014 |
| gauging rule absolute positioning device and using method thereof | 2 | 2015 |
| emergency slurry supplement circulation technology method for slurry shield and device t… 🛈 | 2 | 2017 |