Average Co-Inventor Count = 2.68
ph-index = 5
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. (5 from 4,208 patents)
5 patents:
1. 5926527 - Telephone relay system
2. 5745550 - Multiply accommodated message relaying for hearing impaired callers
3. 5680443 - Smart messages and smart macros for telecommunications relay service
4. 5475733 - Language accommodated message relaying for hearing impaired callers
5. 5463665 - Relaying of messages between hearing impaired callers using keyboards