Average Co-Inventor Count = 5.34
ph-index = 13
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. (30 from 42,517 patents)
2. Hitachi Construction Machinery Co., Ltd. (2 from 1,504 patents)
32 patents:
1. D733134 - Magnetic disk storage unit for electronic computer
2. D733135 - Magnetic disk storage unit for electronic computer
3. 9061597 - Quick charger and quick charging system for electric vehicle
4. D730894 - Magnetic disc storage unit for electronic computer
5. D690694 - Magnetic disk storage unit for electronic computer
6. D669026 - Electric vehicle charging station
7. D650383 - Magnetic disc storage unit for electronic computer
8. D575780 - Magnetic disc storage unit for electronic computer
9. D575781 - Magnetic disc storage unit for electronic computer
10. D575782 - Magnetic disc storage unit for electronic computer
11. D573988 - Magnetic disc storage unit for electronic computer
12. D460886 - Front panel of a storage unit
13. D444148 - Computer housing
14. D440564 - Magnetic disc storage unit for electronic computer
15. D427191 - Computer housing