Average Co-Inventor Count = 6.46
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. 5127047 - Facsimile machine having user notification capability
2. 5048080 - Control and interface apparatus for telephone systems