Average Co-Inventor Count = 4.09
ph-index = 1
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. (2 from 42,517 patents)
2. Hitachi-Ge Nuclear Energy, Ltd. (1 from 155 patents)
3 patents:
1. 10200577 - Investigation system
2. 5057652 - Distributor for an internal combustion engine
3. 4562123 - Liquid fuel cell