Average Co-Inventor Count = 2.40
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. 6930727 - Protection-cover opening/closing mechanism for recording/playback apparatus
2. 5898657 - Disc driving apparatus having a base moving means with first and second