Average Co-Inventor Count = 5.09
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 42,496 patents)
2. Hitachi Microcomputer System, Ltd. (2 from 61 patents)
6 patents:
1. 6434603 - System for task tracking and controlling electronic mail
2. 6047315 - System for task tracking and controlling electronic mail
3. 5764898 - System for task tracking and controlling electronic mail
4. 5303147 - Computer aided planning method and system
5. 5303144 - Computer aided planning support system
6. 5241465 - Method for determining optimum schedule in computer-aided scheduling