Average Co-Inventor Count = 6.05
ph-index = 20
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. (24 from 1,504 patents)
2. Hitachi, Ltd. (11 from 42,508 patents)
3. Kcm Corporation (1 from 35 patents)
36 patents:
1. D854055 - Armrest for a working vehicle
2. D798340 - Hydraulic excavator
3. D752651 - Excavator
4. D752113 - Excavator
5. D752112 - Excavator
6. D695791 - Hydraulic excavator
7. D693858 - Weight for a construction machine
8. D689529 - Console for construction machine
9. D689530 - Portion of cab for construction machine
10. D685006 - Cover for operator cab interior for construction machine with console box
11. D685009 - Portion of a hydraulic excavator
12. D685008 - Portion of a hydraulic excavator
13. D684605 - Cover for construction machine
14. D684606 - Cover for construction machine
15. D684599 - Hydraulic excavator