Average Co-Inventor Count = 21.98
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. Shanghai Zhenhua Heavy Industries Company Limited (1 from 11 patents)
2. No. 2 Engineering Co. of Cccc First Harbor Engineering Co., Ltd. (1 from 2 patents)
3. No.2 Engineering Company Ltd. of Cccc First Harbor Engineering Company Ltd (0 patent)
1 patent:
1. 10689828 - Dredging system and dredger for pre-paved gravel foundation bed surface in open sea deepwater