Average Co-Inventor Count = 5.53
ph-index = 21
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. (32 from 1,504 patents)
2. Hitachi, Ltd. (3 from 42,508 patents)
3. Kcm Corporation (3 from 35 patents)
4. Tcm Corporation (2 from 27 patents)
5. Brother Industries, Ltd. (1 from 980 patents)
6. Ricoh Printing Systems, Ltd. (1 from 129 patents)
7. Tcm Co., Ltd. (1 from 1 patent)
39 patents:
1. D854055 - Armrest for a working vehicle
2. D798340 - Hydraulic excavator
3. 9309644 - Construction machine
4. D752651 - Excavator
5. D752113 - Excavator
6. D752112 - Excavator
7. D703908 - Forklift
8. D693857 - Cover for construction machine
9. D693853 - Wheel loader
10. D692029 - Hydraulic excavator
11. D692028 - Hydraulic excavator
12. D689530 - Portion of cab for construction machine
13. D685009 - Portion of a hydraulic excavator
14. D685008 - Portion of a hydraulic excavator
15. D684599 - Hydraulic excavator