Average Co-Inventor Count = 7.00
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. (1 from 42,496 patents)
2. Hitachi Mitsubishi Hydro Corporation (1 from 13 patents)
1 patent:
1. 12289063 - Modular multilevel power converter and variable speed generator-motor