Average Co-Inventor Count = 4.11
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. (54 from 42,430 patents)
2. Hitachi Industry & Control Solutions, Ltd. (1 from 48 patents)
3. Hitachi Industry & Control Colutions, Ltd. (1 from 1 patent)
56 patents:
1. 12307809 - Photographing apparatus and authentication apparatus
2. 12217469 - Photographing apparatus and authentication apparatus
3. 12067095 - Biometric authentication system, biometric authentication method, and storage medium
4. 11928889 - Photographing apparatus and authentication apparatus
5. 11837029 - Biometric authentication device and biometric authentication method
6. 11645864 - Imaging device, authentication device, and biometric imaging method
7. 11113493 - Biometric authentication system
8. 10460187 - Biometric authentication device and system
9. 10264998 - Blood vessel imaging apparatus and personal authentication system
10. 9342730 - Finger identification apparatus
11. 9292727 - Blood vessel image taking device
12. 9171233 - Biometric information processing device and biometric information processing program
13. 9141843 - Personal authentication device
14. 9076027 - Authentication system using biometric information and authentication device
15. 8908930 - Biometrics authentication device and method