Average Co-Inventor Count = 2.77
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. Vodafone Holding Gmbh (2 from 79 patents)
2. Mannesmann Aktiengesellschaft (1 from 1,150 patents)
3 patents:
1. 6892942 - Roadside control device for a toll apparatus installed in a motor vehicle
2. 6816707 - Debiting device for deducting tolls
3. 6388581 - Method and system for monitoring the proper operation of a debiting device