Average Co-Inventor Count = 6.00
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. Sony Corporation (4 from 58,129 patents)
4 patents:
1. 7411874 - Recording and/or playback device
2. 7362666 - Recording and/or playback device
3. 7359292 - Recording and/or playback device
4. 7342849 - Recording and/or playback device