How many patents does
Liaohe Petroleum Exploration Bureau have?
patents
642
families
607
granted
43
applications
599
CN
640
US
2
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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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Liaohe Petroleum Exploration Bureau
Top ten assignees appearing on patents
2018
Liaohe Petroleum Exploration Bureau
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| method for reclaim of carbon dioxide and nitrogen from boiler flue gas | 4 | 2007 |
| system and method for evaporating liquefied natural gas by utilizing intermediate medium | 2 | 2011 |
| layered electric ignition method for multilayer gas injection of fire flood | 2 | 2010 |
| cable transmission drillable type water source well leaking stoppage method | 2 | 2015 |
| quality control method for cement plug injection | 2 | 2015 |
| compound pipeline welding process of l245nb+316l | 2 | 2009 |
| gas well under-pressure induced-flow plug-removal draining technique | 2 | 2015 |
| thick oil thermal extraction saturated steam flow metering method | 2 | 2009 |
| small-hole hanger | 2 | 2010 |
| fire flood eclectic ignition device | 2 | 2009 |