Average Co-Inventor Count = 3.60
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. (3 from 42,508 patents)
3 patents:
1. 7813975 - System and method for processing account data
2. 7707079 - Tax declaration system
3. 6643646 - Analysis of massive data accumulations using patient rule induction method and on-line analytical processing