Average Co-Inventor Count = 6.73
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. (5 from 42,496 patents)
5 patents:
1. D479230 - Computer
2. 6188569 - Information processing apparatus
3. D432534 - Computer
4. D406824 - Computer
5. D397324 - Computer