Average Co-Inventor Count = 6.30
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 42,517 patents)
3 patents:
1. 9061597 - Quick charger and quick charging system for electric vehicle
2. D669026 - Electric vehicle charging station
3. 7042722 - Electronic equipment