Average Co-Inventor Count = 8.22
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. At&t Bell Laboratories (3 from 3,345 patents)
3 patents:
1. 5185781 - Automation of telephone operator assistance calls
2. 5181237 - Automation of telephone operator assistance calls
3. 5163083 - Automation of telephone operator assistance calls