Average Co-Inventor Count = 4.90
ph-index = 6
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. (3 from 4,208 patents)
2. At&t Bell Laboratories (2 from 3,345 patents)
3. American Telephone & Telegraph Co., At&t Bell Laboratories (1 from 745 patents)
6 patents:
1. 5898757 - Method and system for processing emergency service calls
2. 5822413 - Fraud control system for processing calls with an automatic number
3. 5592539 - System for completing air-to-ground telephone calls
4. 5056134 - Audible logo for identifying a common carrier
5. 4930154 - Audible logo for identifying a common carrier
6. 4776004 - Communication services method and apparatus