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. Sony Corporation (2 from 58,130 patents)
2 patents:
1. 11592661 - Filter unit, filter selection method, and imaging device
2. 8040425 - Imaging apparatus and imaging method using ND filters for color-temperature correction