Average Co-Inventor Count = 13.00
ph-index = 3
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. (3 from 42,508 patents)
2. Hitachi Software Engineering Company, Ltd. (3 from 228 patents)
3. Hitachi Electronics Services Co. Ltd. (3 from 12 patents)
3 patents:
1. 5557736 - Computer system and job transfer method using electronic mail system
2. 5537543 - Electronic mail drive type computer system and file operation method
3. 5408334 - Method and apparatus for having a processor execute a job utilizing an