Average Co-Inventor Count = 5.09
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. Eis International, Inc. (1 from 7 patents)
2. Electronic Information Systems, Inc. (1 from 3 patents)
2 patents:
1. 5867559 - Real-time, on-line, call verification system
2. 5533103 - Calling system and method