Average Co-Inventor Count = 5.64
ph-index = 19
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. (52 from 42,508 patents)
2. Hitachi Microsoftware Systems, Inc. (3 from 10 patents)
3. Hitachi Koki Co., Ltd. (1 from 1,267 patents)
4. Hitachi Information Network, Ltd. (1 from 5 patents)
5. Hitachi Microsofyware Systems, Inc. (1 from 1 patent)
52 patents:
1. 7912928 - Network device and network device control method
2. 7403982 - Network device and network device control method
3. 7339895 - Gateway device and control method for communication with IP and IPV6 protocols
4. 6895393 - Electronic book distributing system by use of purchase certificate and devices therefor
5. 6857131 - Method and apparatus for displaying an image and data related to the image conditioned on user identifier
6. 6643189 - Memory device
7. 6535921 - Method of sending and receiving information and system using such method
8. 6487543 - Media-integrating system, terminal device, recording medium and broadcasting method for use in the media-integrating system
9. 6359812 - Memory device
10. 6314467 - Method of sending and receiving information and system using such method
11. 6198665 - One chip semiconductor integrated circuit device having two modes of data write operation and bits setting operation
12. 6028795 - One chip semiconductor integrated circuit device having two modes of
13. 5991798 - Package medium system having URL hyper-linked to data in removable
14. 5933478 - Data transfer system and handheld terminal device used therefor
15. 5923591 - Memory circuit