Average Co-Inventor Count = 3.56
ph-index = 2
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. T-mobile Deutschland Gmbh (3 from 77 patents)
2. Deutschetelekom Ag (700 patents)
3 patents:
1. 7319855 - Method for charging internet services via a mobile telephone
2. 7072646 - Method of distributing keys to subscribers of communications networks
3. 6993320 - Method and device for accessing a telecommunications network and for billing telecommunication services