Average Co-Inventor Count = 7.50
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. At&t Bell Laboratories (2 from 3,345 patents)
2 patents:
1. 5187710 - Method and apparatus for the billing of value-added communications calls
2. 5003584 - Method and apparatus for the billing of value-added communication calls