Average Co-Inventor Count = 4.00
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. Nortel Networks Corporation (1 from 4,171 patents)
2. Northern Telecom Limited (1 from 2,276 patents)
2 patents:
1. 6148068 - System for managing an audio conference
2. 5943414 - Transparent protected access to corporate dialing plan