Average Co-Inventor Count = 9.17
ph-index = 4
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 Construction Machinery Co., Ltd. (3 from 1,504 patents)
2. Hitachi, Ltd. (1 from 42,517 patents)
4 patents:
1. D704202 - Construction machine display with graphic user interface
2. D700619 - Construction machine display with a graphic user interface
3. D693834 - Construction machine display with a graphic user interface
4. D656153 - Computer display with graphical user interface