Average Co-Inventor Count = 2.00
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. Nok Corporation (2 from 776 patents)
2 patents:
1. 8304119 - Gasket
2. 8278005 - Separator for fuel cell and solid polymer type fuel cell