Average Co-Inventor Count = 3.00
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. Riken Corporation (2 from 852 patents)
2 patents:
1. 7113319 - Photonic crystal and optical waveguide elements
2. 6941055 - Photonic crystal and optical waveguide elements