Average Co-Inventor Count = 8.55
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. Qiqihar Railway Rolling Stock Co., Ltd. (2 from 14 patents)
2. Dalian Qiche Railway Rolling Stock Co., Ltd. (1 from 3 patents)
2 patents:
1. 8746493 - Tank container, tank body and processing method of tank body
2. 8336464 - Freight car bogie and freight car