Average Co-Inventor Count = 3.97
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. (4 from 42,508 patents)
4 patents:
1. 12086731 - Workshop assistance system and workshop assistance method
2. D847178 - Display screen with graphical user interface
3. D818474 - Display screen with graphical user interface
4. D817977 - Display screen with graphical user interface