How many patents does
National Oilwell Varco Norway have?
patents
507
families
61
granted
91
applications
416
WO
95
EP
88
US
71
GB
27
KR
26
CN
7
RoW
193
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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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National Oilwell Varco Norway
Top ten assignees appearing on patents
2018
| national oilwell varco norway | 55 |
National Oilwell Varco Norway
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| control equipment for a torque device for oil field use and method for operation of same | 51 | 2011 |
| a die holder device for oilfield use and method for utilizing the same | 16 | 2012 |
| simultaneous clamp and torque drive | 15 | 2011 |
| hydraulic clamping device | 15 | 2008 |
| a tow line controlling device and method of controlling same | 15 | 2012 |
| method for reducing drillstring oscillations | 14 | 2012 |
| mouse hole damper device | 13 | 2008 |
| a heave compensating system | 13 | 2010 |
| coupler device and method for using the same | 12 | 2013 |
| device for connecting first and second elongated members | 12 | 2012 |