Average Co-Inventor Count = 2.67
ph-index = 2
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 Maxell, Limited (2 from 1,112 patents)
2 patents:
1. 7625660 - Fuel cell and membrane electrode assembly
2. 7192670 - Fuel cell and membrane electrode assembly