Average Co-Inventor Count = 5.00
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. Qingdao University (1 from 31 patents)
2. Guangzhou Metro Design & Research Institute Co., Ltd. (1 from 5 patents)
1 patent:
1. 12191772 - Direct current power supply system for urban rail transit cascaded direct-hanging stations