How many patents does
National Coupling Company have?
patents
316
families
59
granted
162
applications
154
GB
81
US
60
WO
1
RoW
174
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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 Coupling Company
Top ten assignees appearing on patents
2009 - 2018
| national coupling company | 287 |
| hunting energy services | 12 |
2009
| national coupling company | 47 |
2018
| national coupling company | 47 |
National Coupling Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| forbedret dummy undersjøisk hydraulisk koplingselement | 20 | 2012 |
| improved pressure-energized probe seal for female hydraulic coupling member | 17 | 2008 |
| method for autonomous control of a chemical injection system for oil and gas wells | 16 | 2007 |
| probe seal having pressure-energized sealing elements for female hydraulic coupling memb… 🛈 | 16 | 2008 |
| method and apparatus for piston-actuated elastomer probe seal in a hydraulic coupling me… 🛈 | 15 | 2008 |
| subsea bop control system with dual-action check valve | 14 | 2015 |
| metal reinforced seal plate for pilot actuated spool valve | 14 | 2012 |
| hydraulic coupling member with pressure-relieving poppet valve | 11 | 2011 |
| hydraulic coupling with smooth bore poppet valve | 10 | 2008 |
| fault-tolerant chemical injection system for oil and gas wells | 10 | 2008 |