Average Co-Inventor Count = 6.00
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. Crrc Qiqihar Rolling Stock Co., Ltd. Dalian Research & Development Center (1 from 1 patent)
3 patents:
1. 11912316 - Vehicle coupler, coupler tongue and coupler body
2. 11560161 - Railway vehicle, coupler, and coupler body thereof
3. 9707981 - Car-coupler buffer and rail way car