Average Co-Inventor Count = 2.40
ph-index = 1
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. Deutschetelekom Ag (2 from 701 patents)
2 patents:
1. 8331918 - Redirecting of calls to avoid network interworking between fixed network and radio communications network
2. 7164754 - Control of access for telephone service providers using voice recognition