Average Co-Inventor Count = 2.29
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. (2 from 10 patents)
2. Qiqihar Railway Rolling Stock Co., Ltd. (1 from 14 patents)
3. Mudanjiang Jinyuan Coupler and Draft Gear Manufacturing Co., Ltd. (1 from 3 patents)
4. Crrc Qiqihar Rolling Stock Co., Ltd. Dalian Research & Development Center (1 from 1 patent)
3 patents:
1. 10569791 - Railway vehicle and joint connector thereof
2. 9707981 - Car-coupler buffer and rail way car
3. 8186525 - Coupler and anti-creep mechanism for the same