Average Co-Inventor Count = 7.47
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. (2 from 42,485 patents)
2. Hitachi Software Engineering Company, Ltd. (1 from 228 patents)
2 patents:
1. 5379429 - Method of resource management for version-up in a computer system and
2. 5228100 - Method and system for producing from document image a form display with