Average Co-Inventor Count = 3.75
ph-index = 2
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 42,485 patents)
2. Hitachi Automotive Systems, Ltd. (1 from 2,028 patents)
2 patents:
1. 8776962 - Electromagnetic suspension system
2. 8173004 - Method of manufacturing chromium plated article and chromium plating apparatus