Average Co-Inventor Count = 5.09
ph-index = 1
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 42,517 patents)
2. Mitsubishi Heavy Industries Limited (1 from 4,633 patents)
3. Hitachi Building Systems and Engineering Service Co. (1 from 1 patent)
2 patents:
1. 8909763 - Computing-device management device, computing-device management method, and computing-device management program
2. 5343387 - Cyclic maintenance work schedule table preparation system