Average Co-Inventor Count = 1.45
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 (5 from 3,428 patents)
5 patents:
1. 8727820 - Hybrid drive system for a ship
2. 8690616 - Ship propulsion system
3. 8577523 - Method for verifying the toe angle of a ship's rudders
4. 8255102 - Steering unit for a steer-by-wire ship's control system and method for operating the steering unit
5. 8176865 - Steering actuator for a steer-by-wire ship's control system and method for operating said steering actuator