Average Co-Inventor Count = 3.00
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 Computer Entertainment Inc. (3 from 1,799 patents)
3 patents:
1. 6628264 - Entertainment system, entertainment apparatus, recording medium, and program
2. 6482091 - Entertainment system, entertainment apparatus, recording medium, and program
3. 6390919 - Entertainment system, entertainment apparatus, recording medium, and program