Average Co-Inventor Count = 4.29
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 Sachs Ag (2 from 353 patents)
2. Zf Sachs Ag (1 from 141 patents)
3 patents:
1. 6832672 - Hydraulic clutch with a turbine torsional vibration damper
2. 6725988 - Hydrodynamic clutch device
3. 6471021 - Hydrodynamic coupling device