How many patents does
Hunan Oil Pump Company have?
patents
282
families
257
granted
21
applications
261
CN
280
WO
1
RoW
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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Hunan Oil Pump Company
Top ten assignees appearing on patents
Hunan Oil Pump Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| innercap rotor oil pump | 3 | 2010 |
| universal rotary working table used for boring mill and convenient for processing shaft … 🛈 | 2 | 2015 |
| opened inwards-discharged type pressure-limiting valve of oil pump | 2 | 2014 |
| connection mechanism between servo motor and speed reducer | 2 | 2015 |
| oil pump for internal combustion engine | 2 | 2014 |
| variable displacement water pump for engine cooling system | 2 | 2013 |
| combination valve type control system of secondary variable displacement vane pump | 2 | 2015 |
| primary variable displacement vane pump | 2 | 2015 |
| eccentrically-adjusted variable rotor oil pump | 2 | 2010 |
| control system of single action cavity pump outlet feedback variable displacement vane p… 🛈 | 2 | 2014 |