Average Co-Inventor Count = 4.84
ph-index = 5
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)
2. Avaya Inc. (2 from 2,328 patents)
5 patents:
1. D668642 - Telephone handset
2. D634295 - Key extension module for telephone
3. D609212 - Telephone set
4. D588573 - Telephone
5. D530701 - Telephone