How many patents does
Csr Zhuzhou Electric Locomotive Research Institute Company have?
patents
443
families
288
granted
142
applications
301
CN
418
US
9
WO
8
GB
4
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 Zhuzhou Electric Locomotive Research Institute Company
Top ten assignees appearing on patents
2009
Csr Zhuzhou Electric Locomotive Research Institute Company
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 |
| driving system for multi-energy power supply motor | 6 | 2013 |
| method and system for correcting initial zero offset | 5 | 2015 |
| traction distribution method and system of power-distributed train | 4 | 2015 |
| braking force distribution method and system of multiple train units | 4 | 2015 |
| device and method for online health management of insulated gate bipolar transistor | 4 | 2015 |
| cooperative control method and system and frequency converter | 2 | 2015 |
| port switching method and communication equipment | 2 | 2013 |
| igct-based three-level circuit fault elimination method | 2 | 2015 |