Average Co-Inventor Count = 3.00
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 58,129 patents)
3 patents:
1. 8447355 - Communication system, settlement management apparatus and method, portable information terminal and information processing method, and program
2. 8280435 - Communication system, settlement management apparatus and method, portable information terminal and information processing method, and program
3. 7634295 - Communication system, settlement management apparatus and method, portable information terminal and information processing method, and program