Average Co-Inventor Count = 2.40
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. Sony Corporation (2 from 58,131 patents)
2 patents:
1. 5682207 - Image display apparatus for simultaneous display of a plurality of images
2. 4774582 - Picture-in picture television receiver with step-by-step still picture