Average Co-Inventor Count = 3.00
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. Sonera Oyj (3 from 23 patents)
3 patents:
1. 6880001 - System for managing and exchanging telecommunication system subscriber data stored in a single logical subscriber database
2. 6628951 - Procedure and system for the transmission of information and establishment of a telecommunication connection
3. 6373933 - Method for implementing transaction-based billing for telephone services