Average Co-Inventor Count = 5.88
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 Industrial Equipment Systems Co., Ltd. (3 from 496 patents)
2. Hitachi Construction Machinery Co., Ltd. (2 from 1,504 patents)
5 patents:
1. D892835 - Construction machine information display with graphical user interface
2. D890200 - Display screen with graphical user interface for a construction machine
3. D769285 - Display screen or portion thereof with a graphical user interface for an ink jet printer
4. D769286 - Display screen or portion thereof with a graphical user interface for an ink jet printer
5. D768168 - Display screen or portion thereof with a graphical user interface for an ink jet printer