Average Co-Inventor Count = 5.54
ph-index = 3
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. (1 from 4,208 patents)
2. At&t Bell Laboratories (1 from 3,345 patents)
3. American Telephone and Telegraph, Co. (1 from 386 patents)
3 patents:
1. 6775363 - Method of announcing information pertaining to a called party to a calling party during call set-up
2. 5291551 - Home agent telecommunication technique
3. 5164983 - Telemarketing complex performance management system