Average Co-Inventor Count = 3.00
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. 7107496 - Method, apparatus, computer-readable media and user interface for annunciating problems in a system
2. D417222 - Display adjunct for a telephone base
3. D408825 - Telephone handset