Average Co-Inventor Count = 5.94
ph-index = 1
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Crrc Qiqihar Rolling Stock Co., Ltd. (3 from 10 patents)
2. Qiqihar Railway Rolling Stock Co., Ltd. (2 from 14 patents)
3. China Shenhua Energy Company Limited (1 from 8 patents)
4. Shen Hua Railway Equipment Company Limited (1 from 1 patent)
5 patents:
1. 12252061 - Container locking device and piggyback transport vehicle
2. 10689011 - Wagon and vehicle body assembly thereof
3. 10352083 - Compartment and bottom door thereof
4. 9061688 - Bottom door device and hopper car having the same
5. 8939088 - Bottom door opening-closing mechanism, bottom door device and drop-bottom hopper car