Average Co-Inventor Count = 4.61
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. Hitachi, Ltd. (3 from 42,508 patents)
3 patents:
1. 5801904 - Actuator arm with magnetic flux response to bias arm to a stop position
2. 5541792 - Actuator arm with magnetic flux response to bias arm to a stop position
3. 5469311 - Vibration absorbing structure for a magnetic disk apparatus