Average Co-Inventor Count = 3.43
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. British Telecommunications Corporation (2 from 445 patents)
2 patents:
1. 8625763 - Telecommunications calls
2. 7756258 - Communications system with direct access mailbox