Average Co-Inventor Count = 3.79
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. (3 from 42,508 patents)
3 patents:
1. 11393002 - Transaction system, method, and medium
2. 9727069 - Power demand adjustment system and power demand adjustment method
3. 8447703 - Product delivery system