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. Hitachi Maxell, Limited (2 from 1,112 patents)
2 patents:
1. 9428660 - Oil-based ink composition
2. 8669318 - Oil-based ink composition