The report contains ten-year analysis with the following sections
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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 |