Average Co-Inventor Count = 2.67
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 Intellectual Property I, LP (6 from 16,507 patents)
6 patents:
1. 8908850 - International origin dependent customized routing of calls to toll-free numbers
2. 8401167 - International origin dependent customized routing of calls to toll-free numbers
3. 7965829 - Subscriber alterable call transfer service
4. 7813487 - System and method for billing telephone calls
5. 7764778 - International origin dependent customized routing of calls to toll-free numbers
6. 7502455 - Billing for toll free calls terminating with a secondary telecommunications carrier