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. Nortel Networks Corporation (3 from 4,171 patents)
3 patents:
1. 8069252 - Session initiation protocol enabled set-top device
2. 7617298 - Session initiation protocol enabled set-top device
3. 7024461 - Session initiation protocol enabled set-top device