Average Co-Inventor Count = 3.50
ph-index = 4
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 (4 from 3,430 patents)
4 patents:
1. 6418967 - Pressure regulating valve
2. 5688204 - Shifting device for a motor vehicle continuously variable transmission
3. 5566586 - Steering stick for switching or actuating components of a utility vehicle
4. 5388477 - Gearshift device for electrically controlled gearboxes