Average Co-Inventor Count = 3.96
ph-index = 13
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. (24 from 42,508 patents)
2. Hitachi Construction Machinery Co., Ltd. (7 from 1,504 patents)
3. Clarion Co (6 from 1,057 patents)
4. Xanavi Informatics Corporation (2 from 146 patents)
35 patents:
1. 10657805 - Vehicle to vehicle communication device
2. 10253481 - Map generation device
3. 10160383 - Surroundings monitoring system for working machine
4. 10017112 - Surroundings monitoring device of vehicle
5. 9990543 - Vehicle exterior moving object detection system
6. 9829893 - Operation management system for dump trucks
7. 9463741 - Vehicle peripheral obstacle notification system
8. 9418557 - Fleet operation management system
9. 9304004 - Map update server, map update system, and car navigation system
10. 9097541 - Driving support device
11. 8983709 - Autonomous travel system
12. 8706693 - Map update data delivery method, map update data delivery device and terminal device
13. 8548664 - Autonomic traveling apparatus for a vehicle
14. 8489332 - Car navigation system, program and method for updating map data
15. 8311736 - Navigation device, navigation method and navigation system