Average Co-Inventor Count = 5.08
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)
2. Hitachi Keiyo Engineering Co., Ltd. (1 from 34 patents)
3 patents:
1. 7241044 - Production control system of autonomous and decentralized type
2. 5262954 - Automated manufacture line
3. 5202996 - Software structuring system and method by data table translation