Average Co-Inventor Count = 1.96
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 (3 from 58,132 patents)
3 patents:
1. 6798600 - Recording medium reproducing apparatus with retractable lid covering medium insertion port
2. 6683829 - Disc changer apparatus
3. 6574179 - Disk adapter carried away from a mounted disk