How many patents does
Gudao Oil Production Factory, Sinopec Shengli Oilfield Company have?
patents
534
families
525
granted
9
applications
525
CN
534
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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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Gudao Oil Production Factory, Sinopec Shengli Oilfield Company
Top ten assignees appearing on patents
2009
2018
Gudao Oil Production Factory, Sinopec Shengli Oilfield Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| sand-replenishing tool for rapidly opening and closing filling channel | 2 | 2013 |
| high-strength high-permeability chemical sand prevention agent, and preparation method a… 🛈 | 2 | 2013 |
| organic silicon water plugging agent and preparation method thereof | 2 | 2014 |
| intelligent self-circulation well washing device | 2 | 2013 |
| oil well equal-dryness steam distributor | 2 | 2012 |
| walking beam type pumping unit applied load power meter on-spot error tester | 2 | 2013 |
| trapezoidal tooth coupling belt type discontinuous non-beam pumping unit | 2 | 2015 |
| electric energy meter applied load on-site anti-electricity-stealing detector and detect… 🛈 | 2 | 2011 |
| continuous lifting pump for pumping unit and lifting method thereof | 2 | 2012 |
| sand filling tool capable of opening and closing filling channel quickly | 1 | 2013 |