Average Co-Inventor Count = 3.46
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 42,485 patents)
3 patents:
1. 11551078 - Data processing apparatus and data processing method
2. 11435706 - Control system and control method
3. 10909558 - Marketing support system