Average Co-Inventor Count = 6.34
ph-index = 6
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. (6 from 42,508 patents)
2. Maxell, Ltd. (5 from 890 patents)
3. Hitachi Maxell, Limited (2 from 1,112 patents)
4. Hitachi Consumer Electronics Co., Ltd. (1 from 365 patents)
5. Hitachi-omron Terminal Solutions, Corporation (1 from 91 patents)
6. Hitachi Asahi Electronics Co., Ltd. (1 from 5 patents)
15 patents:
1. 12368788 - Content delivery system, delivery server, receiving terminal, and content delivery method
2. 11863648 - Content delivery system, delivery server, receiving terminal, and content delivery method
3. 11451646 - Content delivery system, delivery server, receiving terminal, and content delivery method
4. 10728362 - Content delivery system, delivery server, receiving terminal, and content delivery method
5. 10057371 - Content delivery system, delivery server, receiving terminal, and content delivery method
6. 9661101 - Content delivery system, delivery server, receiving terminal, and content delivery method
7. 9313295 - Content delivery system, delivery server, receiving terminal, and content delivery method
8. 8588478 - Biometric authentication apparatus and biometric authentication method
9. 8484299 - Content delivery system, delivery server, receiving terminal, and content delivery method
10. 7299976 - Payment apparatus and method, and money assignment apparatus and method
11. 6886744 - Automatic vending apparatus involving contract and vending system
12. 5214269 - Method for performing transaction
13. 4866520 - Video system for displaying lower resolution video signals on higher
14. 4808989 - Display control apparatus
15. 4748678 - Method of storing and retrieving image data