How many patents does
Dalian Locomotive And Rolling Stock Co., Ltd. Cnrgroup have?
patents
793
families
631
granted
127
applications
666
CN
747
WO
15
RoW
31
Buy the report
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
contact us for pricing
- VAT will apply to UK companies
- EU companies must supply their VAT number
Check out our sample pages |
Find companies to compare
Many companies now available
companies
12,000+
patents
42 million
patent families
23 million
Search to find companies of interest
read summary of their published patent
the following tables are just extracts from the report
the company report contains more information
Dalian Locomotive And Rolling Stock Co., Ltd. Cnrgroup
Top ten assignees appearing on patents
2009 - 2018
Dalian Locomotive And Rolling Stock Co., Ltd. Cnrgroup
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| method for preventing locomotive from wheel slip and skid based on control of slip rate | 6 | 2012 |
| method for preventing locomotive from wheel slip and skid based on controlling rotation … 🛈 | 6 | 2012 |
| computer-control method for multi-unit coupling of a rail locomotive | 6 | 2010 |
| detection method used for locomotive traction motor speed signals and based on magnetoel… 🛈 | 6 | 2012 |
| control method for preventing auxiliary generator circuit of diesel locomotive from over… 🛈 | 6 | 2013 |
| railway locomotive, and gear box and axle-hung box coupling device thereof | 6 | 2010 |
| locomotive short-distance wireless communication control system | 6 | 2014 |
| method for measuring instantaneous rotation speed of synchronous generator | 6 | 2010 |
| a circuit and method for self-detecting of controller of diesel locomotive | 6 | 2013 |
| motor starting control method of cooling fan of railroad locomotive | 5 | 2015 |