How many patents does
Csr Zhuzou Electric Locomotive Research Instituteco. have?
patents
552
families
378
granted
151
applications
401
CN
524
US
10
GB
8
WO
6
EP
4
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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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Csr Zhuzou Electric Locomotive Research Instituteco.
Top ten assignees appearing on patents
2009
2018
Csr Zhuzou Electric Locomotive Research Instituteco.
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| control method for restarting permanent magnet synchronous motor with speed, device and … 🛈 | 7 | 2013 |
| direct-axis current protection method and device for permanent magnet synchronous motor … 🛈 | 7 | 2013 |
| rotor temperature monitoring method and system for permanent magnet synchronous motor | 7 | 2014 |
| method and device for acquiring rotor position based on permanent magnet synchronous dri… 🛈 | 6 | 2014 |
| driving system for multi-energy power supply motor | 6 | 2013 |
| photovoltaic intelligent power supply | 4 | 2014 |
| semi-physical simulation method and system of urban rail traction system | 2 | 2013 |
| vehicle-mounted energy storing device and method for electric locomotive and electric ve… 🛈 | 2 | 2013 |
| method for detecting position of synchronous generator for variable-frequency starting o… 🛈 | 2 | 2013 |
| control method for frequency-conversion starting of diesel engine of alternating-current… 🛈 | 2 | 2013 |