Average Co-Inventor Count = 4.44
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 (2 from 58,129 patents)
2. Sony Electronics Inc (2 from 2,335 patents)
2 patents:
1. 8473334 - System and method for issuing and redeeming incentives on electronic data cards
2. 7568631 - System, apparatus and method for obtaining one-time credit card numbers using a smart card