Average Co-Inventor Count = 3.46
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. Deutschetelekom Ag (3 from 701 patents)
2. Infoman Ag (1 from 1 patent)
3 patents:
1. 6868384 - Method for advertising in speech-supported telecommunication links
2. 6504914 - Method for dialog control of voice-operated information and call information services incorporating computer-supported telephony
3. 6222915 - Method for providing telecommunications-based services