Average Co-Inventor Count = 4.09
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. Nortel Networks Corporation (2 from 4,171 patents)
2. Northern Telecom Limited (1 from 2,276 patents)
3 patents:
1. 6449474 - Method and apparatus for call interception capabilities for use with intelligent network services in a communications system
2. 6181927 - Sponsored call and cell service
3. 6175622 - Virtual private network for a telephone network