Average Co-Inventor Count = 6.63
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. Zf Friedrichshafen Ag (2 from 3,428 patents)
2. Zf Sachs Ag (1 from 141 patents)
3 patents:
1. 7699150 - Hydrodynamic clutch device
2. 7143879 - Torsional vibration damper
3. 7073646 - Torsional vibration damper