Average Co-Inventor Count = 3.20
ph-index = 9
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. (11 from 42,496 patents)
11 patents:
1. 7469156 - Portable information terminal
2. 7460885 - Mobile telephone
3. 7280151 - Video camera with a rotatable grip unit
4. 7228151 - Mobile phone with camera
5. D526298 - Mobile telephone
6. 7003318 - Mobile phone with camera
7. 6957083 - Mobile telephone
8. D503695 - Mobile telephone
9. D490422 - Handheld computer
10. D484478 - Mobile telephone
11. D477294 - Mobile telephone