Average Co-Inventor Count = 2.86
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 Corp. (2 from 4,208 patents)
2 patents:
1. 5680443 - Smart messages and smart macros for telecommunications relay service
2. 5463665 - Relaying of messages between hearing impaired callers using keyboards