Average Co-Inventor Count = 3.00
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. Zhejiang Dunan Hetian Metal Co., Ltd. (1 from 10 patents)
2. Zhejiang Dunan Precision Industries Group Co., Ltd (1 from 2 patents)
1 patent:
1. D548818 - Cut-off valve