How many patents does
Enn Gasification Coal Mining Company have?
patents
301
families
196
granted
86
applications
215
CN
280
WO
9
US
4
EP
4
RoW
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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Enn Gasification Coal Mining Company
Top ten assignees appearing on patents
2009
2018
Enn Gasification Coal Mining Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| gas injection apparatus with controllable gas injection point, gas injection process, an… 🛈 | 7 | 2013 |
| underground gasification ignition method | 5 | 2013 |
| coal co-gasification method | 4 | 2014 |
| coal co-gasification method | 4 | 2014 |
| passage formation method for underground coal gasification | 3 | 2010 |
| underground gasification well cementing method and well structure | 3 | 2014 |
| oil shale mining method and device | 3 | 2011 |
| coal underground gasification device and gasification method thereof | 2 | 2014 |
| underground gasification method | 2 | 2014 |
| underground gasification method | 2 | 2015 |