Average Co-Inventor Count = 2.14
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 (3 from 58,129 patents)
3 patents:
1. RE41977 - Recording and reproducing apparatus and terminal apparatus
2. RE41112 - Recording and reproducing apparatus and terminal apparatus
3. 7225163 - Recording/reproducing device and recording/reproducing method