Average Co-Inventor Count = 3.45
ph-index = 5
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. (7 from 42,517 patents)
2. Hitachi Maxell, Limited (1 from 1,112 patents)
7 patents:
1. 7003179 - Sheet-recognizing machine
2. 6721465 - Non-contact image reader and system using the same
3. 5901855 - Method and apparatus for sorting and rearranging mails in sequence
4. 5559932 - Printer and computer system with detachable built-in printer
5. 5467475 - Data collection-transmission apparatus and data collection system
6. 5408633 - Data processing system and method for transfer and merging data in
7. 5214269 - Method for performing transaction