Average Co-Inventor Count = 3.98
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. (59 from 42,517 patents)
2. Hiatachi, Ltd. (1 from 1 patent)
60 patents:
1. 11977765 - Storage system and data processing method
2. 11579793 - Storage system and data processing method
3. 11556428 - Backup system including a data protection area and a read-only volume used by a controller to read a copy of backup data from the data protection area
4. 11474732 - Security system, host system, and backup method
5. 11061781 - Backup system
6. 10599509 - Management system and management method for computer system
7. 10592352 - Backup system
8. 10437642 - Management system for computer system
9. 9747036 - Tiered storage device providing for migration of prioritized application specific data responsive to frequently referenced data
10. 8954671 - Tiered storage device providing for migration of prioritized application specific data responsive to frequently referenced data
11. 8516209 - Computer system, storage volume management method, and computer-readable storage medium
12. 8458234 - Data management method
13. 8397105 - Computer system or performance management method of computer system
14. 8364925 - Storage system and storage system data migration method
15. 8332658 - Computer system, management terminal, storage system and encryption management method