Average Co-Inventor Count = 4.50
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 58,131 patents)
3 patents:
1. 9787646 - Electronic money system and electronic money terminal
2. 7426493 - Electronic money system and electronic money terminal
3. 4935815 - Scanconverter system with superimposing apparatus