Average Co-Inventor Count = 4.67
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 42,517 patents)
3 patents:
1. 5754629 - Information processing system which can handle voice or image data
2. 5617518 - Output control method and system of servers
3. 5432899 - Method for managing resources and information processing system