How many patents does
Cnpc have?
patents
7,516
families
5,565
granted
1,859
applications
5,657
CN
7,256
US
80
WO
65
EP
36
JP
6
GB
4
RoW
69
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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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Cnpc
Top ten assignees appearing on patents
2009 - 2018
2009
Cnpc
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| restorable antennae apparatus and system for well logging | 16 | 2013 |
| well logging apparatus and system | 12 | 2013 |
| heavy oil catalytic cracking catalyst and preparation method therefor | 12 | 2011 |
| high light received heavy oil catalytic cracking catalyst and preparation method therefor | 11 | 2011 |
| four electrodes combination and arrangement method for sea electromagnetic exploration | 9 | 2010 |
| three dimensional small bins electromagnetic consecutive array data acquisition method | 9 | 2008 |
| well constrained horizontal variable h-v curve constructing method for seismic wave velo… 🛈 | 9 | 2009 |
| method for looking for oil and gas reservoir on the basis of trap-3d software | 8 | 2014 |
| ultra-stable rare earth y-type molecular sieve and preparation method therefor | 8 | 2011 |
| magnesium modified ultra-stable rare earth y-type molecular sieve and preparation method… 🛈 | 8 | 2011 |