How many patents does
China Petroleum Logging Company have?
patents
333
families
248
granted
92
applications
241
CN
332
WO
1
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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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China Petroleum Logging Company
Top ten assignees appearing on patents
2009 - 2018
| cnpc (china national petroleum cor… 🛈 | 265 |
| china petroleum logging company | 261 |
| cnpc logging company | 5 |
| petrochina company | 4 |
2018
China Petroleum Logging Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| process for producing olefin by dehydrogenation of alkane | 3 | 2012 |
| automatic gain control system and control method for agc (automatic gain control) loop | 2 | 2015 |
| accumulating gas flowmeter and collection method thereof | 2 | 2013 |
| reservoir classification method and system | 2 | 2013 |
| water flooded layer well logging evaluation method and system | 2 | 2013 |
| method and system for calculating coal rock cleat permeability | 2 | 2013 |
| densified sandstone air layer identification evaluation method free from influence of fr… 🛈 | 2 | 2012 |
| logging-while-drilling method based on time lapse | 2 | 2014 |
| square rock sample holder | 2 | 2013 |
| roller type rotary bullet loading bracket | 2 | 2013 |