Average Co-Inventor Count = 2.40
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 42,488 patents)
2 patents:
1. 7472388 - Job monitoring system for browsing a monitored status overlaps with an item of a pre-set browsing end date and time
2. 7325055 - Method and system for judging reliability of resources, and program for the same