How many patents does
Qingdao Sifang Rolling Stock Research Institute Company have?
patents
607
families
376
granted
118
applications
489
CN
449
EP
48
US
36
WO
29
JP
26
RoW
19
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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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Qingdao Sifang Rolling Stock Research Institute Company
Top ten assignees appearing on patents
2009 - 2018
Qingdao Sifang Rolling Stock Research Institute Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| hand brake | 12 | 2014 |
| segmented inverting cover plate apparatus for underfloor vehicle lifting jack | 12 | 2012 |
| semi-permanent draw gear for light rail | 12 | 2009 |
| balancing apparatus for transition coupler | 11 | 2013 |
| system and method for parallel power supply control for auxiliary converters of motor tr… 🛈 | 10 | 2013 |
| device for testing electromagnetic attraction force of magnetic track brake | 10 | 2015 |
| self-adjusting supporting head | 10 | 2014 |
| movable loading machine with twin telescopic boom structure | 10 | 2013 |
| protocol converter and conversion method of cpci bus and isa bus | 10 | 2015 |
| opening/closing mechanism having a self-locking device | 10 | 2013 |