Average Co-Inventor Count = 1.75
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 58,129 patents)
2 patents:
1. 8429689 - Program data processing method and apparatus
2. 6125230 - Magnetic tape recording and reproducing apparatus for video signal