Average Co-Inventor Count = 4.78
ph-index = 8
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. (11 from 42,517 patents)
2. Xanavi Informatics Corporation (4 from 146 patents)
3. Clarion Co (2 from 1,057 patents)
4. Hcx Corporation (1 from 3 patents)
15 patents:
1. 8803905 - Display control device and display layer combination program
2. 8706693 - Map update data delivery method, map update data delivery device and terminal device
3. 7810096 - Computer executing multiple operating systems
4. 7610144 - Navigation apparatus and processing method of the same
5. 7502674 - On-vehicle terminal system
6. 7493215 - Navigation system and output controlling method therefor
7. 7299186 - Speech input system, speech portal server, and speech input terminal
8. 7136745 - In-vehicle unit and service center system
9. 7076362 - Audio interactive navigation system, moving terminal device, and audio interactive server
10. 7069519 - Method, apparatus and navigation apparatus for sharing display by plural operating systems
11. 7058579 - Speech input system, speech portal server, and speech input terminal
12. 6944593 - Speech input system, speech portal server, and speech input terminal
13. 6615303 - Computer system with multiple operating system operation
14. 6546485 - Method for exchanging modules in operating system by using inheritance buffer presented in virtual space to store inherited information of old module and read by new module thereafter
15. 5519875 - Distributed processing system for modules, each having modularized