Average Co-Inventor Count = 7.56
ph-index = 3
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)
2. Hitachi Information and Control System Inc. (1 from 1 patent)
3 patents:
1. 5666484 - Control method for distributed processing system
2. 5655079 - Data processing system and data transmission and processing method
3. 5201034 - Interactive intelligent interface