Average Co-Inventor Count = 6.00
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. 7855940 - Pickup lens with phase compensator and optical pickup apparatus using the same
2. 7586815 - Pickup lens with phase compensator and optical pickup apparatus using the same