Average Co-Inventor Count = 4.20
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. Electronic Information Systems, Inc. (2 from 3 patents)
2 patents:
1. 5533103 - Calling system and method
2. 5430792 - Automated telephone calling system