Average Co-Inventor Count = 5.71
ph-index = 3
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 5,290 patents)
2. Ntt Software Corporation (1 from 2 patents)
3 patents:
1. 6240443 - Communication system and communication method
2. 5736982 - Virtual space apparatus with avatars and speech
3. 5576950 - Video image search method and system using the same