Average Co-Inventor Count = 5.83
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. Tianjin University (2 from 257 patents)
2 patents:
1. 11834141 - Heave survey platform
2. 11794867 - Driving method of lifting device of underwater survey system