How many patents does
Southwest Petroleum University have?
patents
7,288
families
5,820
granted
1,402
applications
5,886
CN
7,200
WO
42
US
27
EP
13
RoW
6
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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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Southwest Petroleum University
Top ten assignees appearing on patents
2009 - 2018
2009
2018
Southwest Petroleum University
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| composite drill bit | 10 | 2010 |
| preparation method of thioxanthone-modified polyethyleneimine photoinitiator | 8 | 2010 |
| rotary drill bit | 8 | 2010 |
| gel, leaking stoppage method using the same, and well kill leaking stoppage method using… 🛈 | 7 | 2013 |
| automatic measuring instrument and measuring method for unconventional natural gas conte… 🛈 | 6 | 2013 |
| actively driven spiral pipeline robot | 5 | 2012 |
| underground annular blowout preventer and assembly process thereof | 5 | 2011 |
| drilling and completion and production increasing system for shale gas reservoir of mult… 🛈 | 5 | 2014 |
| deepwater drilling condition based marine riser mechanical behavior experiment simulatio… 🛈 | 4 | 2013 |
| method for calculating rock water saturation | 4 | 2015 |