Average Co-Inventor Count = 3.45
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. (4 from 42,485 patents)
4 patents:
1. 12307395 - Timetable planning system and timetable generating method
2. 11836657 - Resource management planning support device, resource management planning support method, and programs
3. 11188567 - Data analysis support apparatus and data analysis support system
4. 10402755 - Transportation service information providing apparatus, and transportation service information providing method