Average Co-Inventor Count = 2.78
ph-index = 10
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. (21 from 42,508 patents)
2. Hitachi Microcomputer Engineering, Ltd. (2 from 149 patents)
21 patents:
1. 12499905 - Emotion recognition system and emotion recognition method
2. 12086731 - Workshop assistance system and workshop assistance method
3. 11605377 - Dialog device, dialog method, and dialog computer program
4. 10732643 - Control system, moving object, and control apparatus
5. 10691898 - Synchronization method for visual information and auditory information and information processing device
6. 10629222 - Sound signal procession method and device
7. 10339381 - Control apparatus, control system, and control method
8. 9989626 - Mobile robot and sound source position estimation system
9. 7864703 - Packet communication device
10. 7826393 - Management computer and computer system for setting port configuration information
11. 7801060 - Network management apparatus and network system
12. 7333488 - Multicast delivery control apparatus and method
13. 5638508 - Method and a system for processing a log record
14. 5377352 - Method of scheduling tasks with priority to interrupted task locking
15. 5333314 - Distributed data base system of composite subsystem type, and method of