Average Co-Inventor Count = 5.46
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. Nippon Telegraph and Telephone Corporation (2 from 5,289 patents)
2 patents:
1. 7562127 - Contents additional service inquiry server for identifying servers providing additional services and distinguishing between servers
2. 6111917 - Image communication system and method