Average Co-Inventor Count = 7.05
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. (2 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)
4. American Telephone and Telegraph, Co. (1 from 386 patents)
5. At&t Ipm Corp. (1 from 91 patents)
6 patents:
1. 5694459 - Personalized information service system
2. 5459779 - Method for switching telephone calls to information service providers
3. 5444713 - Telephone information service system using digital and out-of-band
4. 5185781 - Automation of telephone operator assistance calls
5. 5181237 - Automation of telephone operator assistance calls
6. 4899375 - More efficient call handling for operator assistance calls