Average Co-Inventor Count = 10.00
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. Zf Friedrichshafen Ag (1 from 3,448 patents)
2. Zf Sachs Ag (1 from 141 patents)
2 patents:
1. 7484607 - Torsional vibration damper
2. 6789658 - Clutch system