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. Hitachi Powdered Metals Co., Ltd. (1 from 149 patents)
1 patent:
1. 7892481 - Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method therefor