How many patents does
Zhengzhou Coal Mining Machinery Group Company have?
patents
235
families
218
granted
18
applications
217
CN
235
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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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Zhengzhou Coal Mining Machinery Group Company
Top ten assignees appearing on patents
2009 - 2018
2018
Zhengzhou Coal Mining Machinery Group Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| hydraulic support pushing frame composite external loading test device | 2 | 2015 |
| high inclination-angle termination point hydraulic support | 2 | 2009 |
| hydraulic bracket test-bed pin shaft installation monitoring device | 2 | 2010 |
| manufacturing method for hydraulic support pin roll seat | 2 | 2014 |
| two-stage side guard transition bracket for large height mining face | 2 | 2010 |
| method for arranging coal mine large-mining-height working surface equipment | 2 | 2010 |
| selection method of hydraulic support high-water-content hydraulic liquid based on liqui… 🛈 | 2 | 2014 |
| coal face gob-side entry retaining supporting method | 2 | 2014 |
| operation panel of hydraulic support frame controller | 2 | 2009 |
| human-computer interface control panel of hydraulic support frame controller | 2 | 2009 |