Average Co-Inventor Count = 1.20
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. Mannesmann Aktiengesellschaft (3 from 1,150 patents)
3 patents:
1. 6141609 - Device for recording information on a vehicle's itinerary
2. 6081388 - Opto-electronic imaging system for industrial applications
3. 5721678 - Arrangement for a use billing system