How many patents does
Liaoning Petroleum Machinery Manufacturing Company have?
patents
343
families
337
granted
6
applications
337
CN
343
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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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Liaoning Petroleum Machinery Manufacturing Company
Top ten assignees appearing on patents
Liaoning Petroleum Machinery Manufacturing Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| method and tools for using wire cutting to machine inner surface of hydraulic clamp jaw … 🛈 | 2 | 2015 |
| intelligent mobile monitoring and full-automatic maintenance method and device of electr… 🛈 | 2 | 2015 |
| circulating cooling water device applied to petroleum driller braking system and applica… 🛈 | 2 | 2015 |
| automatic blowout prevention system for oil-field workover rig | 2 | 2011 |
| sluice-valve under-pressure replacement device and method of oil extraction wellhead | 2 | 2015 |
| generator intelligent grid-connection control method and device | 2 | 2015 |
| overshot with slot | 1 | 2012 |
| hinge type salvage barrel | 1 | 2012 |
| logging instrument fisher | 1 | 2012 |
| tiger mouth salvage hook | 1 | 2012 |