Average Co-Inventor Count = 1.50
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. Mci, Inc. (1 from 161 patents)
2. Worldcom, Inc. (1 from 132 patents)
2 patents:
1. 7200208 - Method and system for providing communication services for hearing-impaired parties
2. 6542582 - Filtering signals in a conference call environment